Search

Daniel J. Rohrhoff

Examiner (ID: 3742, Phone: (571)270-7624 , Office: P/3637 )

Most Active Art Unit
3637
Art Unit(s)
3637
Total Applications
1567
Issued Applications
1193
Pending Applications
99
Abandoned Applications
307

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 20707704 [patent_doc_number] => 20260132032 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-05-14 [patent_title] => METHOD FOR PREPARING CATALYTIC GRAPHITIZED FEW-LAYER COAL-BASED GRAPHENE [patent_app_type] => utility [patent_app_number] => 19/442817 [patent_app_country] => US [patent_app_date] => 2026-01-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 0 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -5 [patent_words_short_claim] => 137 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19442817 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/442817
METHOD FOR PREPARING CATALYTIC GRAPHITIZED FEW-LAYER COAL-BASED GRAPHENE Jan 6, 2026 Pending
Array ( [id] => 20393683 [patent_doc_number] => 20250369158 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-12-04 [patent_title] => PROCESS FOR PREPARING A CARBON FIBER PRECURSOR [patent_app_type] => utility [patent_app_number] => 19/296181 [patent_app_country] => US [patent_app_date] => 2025-08-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2433 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -3 [patent_words_short_claim] => 170 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19296181 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/296181
PROCESS FOR PREPARING A CARBON FIBER PRECURSOR Aug 10, 2025 Pending
Array ( [id] => 20321516 [patent_doc_number] => 20250333604 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-10-30 [patent_title] => SYSTEM AND METHOD FOR PREPARING CARBON BLACK FROM WASTE TIRES BY USING PYROLYSIS [patent_app_type] => utility [patent_app_number] => 19/263851 [patent_app_country] => US [patent_app_date] => 2025-07-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 0 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 100 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19263851 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/263851
SYSTEM AND METHOD FOR PREPARING CARBON BLACK FROM WASTE TIRES BY USING PYROLYSIS Jul 8, 2025 Pending
Array ( [id] => 20100647 [patent_doc_number] => 20250230583 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-07-17 [patent_title] => PROCESS FOR PREPARING A CARBON FIBER PRECURSOR [patent_app_type] => utility [patent_app_number] => 19/097214 [patent_app_country] => US [patent_app_date] => 2025-04-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1227 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -1 [patent_words_short_claim] => 2 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19097214 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/097214
PROCESS FOR PREPARING A CARBON FIBER PRECURSOR Mar 31, 2025 Abandoned
Array ( [id] => 20139589 [patent_doc_number] => 20250246633 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-07-31 [patent_title] => GRAPHENE OXIDE, POSITIVE ELECTRODE FOR NONAQUEOUS SECONDARY BATTERY USING GRAPHENE OXIDE, METHOD OF MANUFACTURING POSITIVE ELECTRODE FOR NONAQUEOUS SECONDARY BATTERY, NONAQUEOUS SECONDARY BATTERY, AND ELECTRONIC DEVICE [patent_app_type] => utility [patent_app_number] => 19/085664 [patent_app_country] => US [patent_app_date] => 2025-03-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 17166 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -24 [patent_words_short_claim] => 2 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19085664 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/085664
GRAPHENE OXIDE, POSITIVE ELECTRODE FOR NONAQUEOUS SECONDARY BATTERY USING GRAPHENE OXIDE, METHOD OF MANUFACTURING POSITIVE ELECTRODE FOR NONAQUEOUS SECONDARY BATTERY, NONAQUEOUS SECONDARY BATTERY, AND ELECTRONIC DEVICE Mar 19, 2025 Pending
Array ( [id] => 20153507 [patent_doc_number] => 20250253345 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-08-07 [patent_title] => GRAPHENE OXIDE, POSITIVE ELECTRODE FOR NONAQUEOUS SECONDARY BATTERY USING GRAPHENE OXIDE, METHOD OF MANUFACTURING POSITIVE ELECTRODE FOR NONAQUEOUS SECONDARY BATTERY, NONAQUEOUS SECONDARY BATTERY, AND ELECTRONIC DEVICE [patent_app_type] => utility [patent_app_number] => 19/085677 [patent_app_country] => US [patent_app_date] => 2025-03-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 17242 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -20 [patent_words_short_claim] => 2 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19085677 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/085677
GRAPHENE OXIDE, POSITIVE ELECTRODE FOR NONAQUEOUS SECONDARY BATTERY USING GRAPHENE OXIDE, METHOD OF MANUFACTURING POSITIVE ELECTRODE FOR NONAQUEOUS SECONDARY BATTERY, NONAQUEOUS SECONDARY BATTERY, AND ELECTRONIC DEVICE Mar 19, 2025 Pending
Array ( [id] => 20153506 [patent_doc_number] => 20250253344 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-08-07 [patent_title] => GRAPHENE OXIDE, POSITIVE ELECTRODE FOR NONAQUEOUS SECONDARY BATTERY USING GRAPHENE OXIDE, METHOD OF MANUFACTURING POSITIVE ELECTRODE FOR NONAQUEOUS SECONDARY BATTERY, NONAQUEOUS SECONDARY BATTERY, AND ELECTRONIC DEVICE [patent_app_type] => utility [patent_app_number] => 19/085651 [patent_app_country] => US [patent_app_date] => 2025-03-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 17268 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [patent_words_short_claim] => 2 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19085651 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/085651
GRAPHENE OXIDE, POSITIVE ELECTRODE FOR NONAQUEOUS SECONDARY BATTERY USING GRAPHENE OXIDE, METHOD OF MANUFACTURING POSITIVE ELECTRODE FOR NONAQUEOUS SECONDARY BATTERY, NONAQUEOUS SECONDARY BATTERY, AND ELECTRONIC DEVICE Mar 19, 2025 Pending
Array ( [id] => 20272178 [patent_doc_number] => 12441948 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-10-14 [patent_title] => Carbon material and production method therefor [patent_app_type] => utility [patent_app_number] => 19/038859 [patent_app_country] => US [patent_app_date] => 2025-01-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 739 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 42 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19038859 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/038859
Carbon material and production method therefor Jan 27, 2025 Issued
Array ( [id] => 19738618 [patent_doc_number] => 12215441 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2025-02-04 [patent_title] => Method for preparing medium- and high-modulus large tow carbon fibers [patent_app_type] => utility [patent_app_number] => 18/808363 [patent_app_country] => US [patent_app_date] => 2024-08-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 8 [patent_no_of_words] => 5717 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 133 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18808363 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/808363
Method for preparing medium- and high-modulus large tow carbon fibers Aug 18, 2024 Issued
Array ( [id] => 19542951 [patent_doc_number] => 20240359987 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-10-31 [patent_title] => WATER TREATMENT METHOD WITH PORPHYRIN-CONTAINING ADSORBENT [patent_app_type] => utility [patent_app_number] => 18/767251 [patent_app_country] => US [patent_app_date] => 2024-07-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 15708 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -4 [patent_words_short_claim] => 2 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18767251 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/767251
Water treatment method with porphyrin-containing adsorbent Jul 8, 2024 Issued
Array ( [id] => 19543560 [patent_doc_number] => 20240360596 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-10-31 [patent_title] => PROCESS FOR PREPARING A CARBON FIBER PRECURSOR [patent_app_type] => utility [patent_app_number] => 18/761880 [patent_app_country] => US [patent_app_date] => 2024-07-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6635 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -3 [patent_words_short_claim] => 135 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18761880 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/761880
PROCESS FOR PREPARING A CARBON FIBER PRECURSOR Jul 1, 2024 Abandoned
Array ( [id] => 19940122 [patent_doc_number] => 12312243 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2025-05-27 [patent_title] => Carbon nanotubes, carbon nanotube dispersion, carbon nanotube resin composition, mixture slurry, electrode film, secondary battery, method for manufacturing carbon nanotubes, and method for manufacturing a carbon nanotube dispersion [patent_app_type] => utility [patent_app_number] => 18/872278 [patent_app_country] => US [patent_app_date] => 2024-06-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 20417 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 92 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18872278 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/872278
Carbon nanotubes, carbon nanotube dispersion, carbon nanotube resin composition, mixture slurry, electrode film, secondary battery, method for manufacturing carbon nanotubes, and method for manufacturing a carbon nanotube dispersion Jun 16, 2024 Issued
Array ( [id] => 19884050 [patent_doc_number] => 12269742 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-04-08 [patent_title] => Manufacturing apparatus and manufacturing method for carbon nanotube [patent_app_type] => utility [patent_app_number] => 18/678425 [patent_app_country] => US [patent_app_date] => 2024-05-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 19 [patent_figures_cnt] => 35 [patent_no_of_words] => 9658 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 102 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18678425 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/678425
Manufacturing apparatus and manufacturing method for carbon nanotube May 29, 2024 Issued
Array ( [id] => 19701329 [patent_doc_number] => 12195336 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2025-01-14 [patent_title] => Carbon nanomaterial derived from human waste [patent_app_type] => utility [patent_app_number] => 18/672270 [patent_app_country] => US [patent_app_date] => 2024-05-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 20 [patent_no_of_words] => 3272 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 111 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18672270 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/672270
Carbon nanomaterial derived from human waste May 22, 2024 Issued
Array ( [id] => 19630963 [patent_doc_number] => 20240409412 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-12-12 [patent_title] => MULTIWALLED CARBON NANOTUBE AND A PHOTOCATALYSIS PROCESS FOR PRODUCING HYDROGEN AND CARBON NANOSTRUCTURES [patent_app_type] => utility [patent_app_number] => 18/653364 [patent_app_country] => US [patent_app_date] => 2024-05-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7162 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 2 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18653364 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/653364
Multiwalled carbon nanotube and a photocatalysis process for producing hydrogen and carbon nanostructures May 1, 2024 Issued
Array ( [id] => 19332394 [patent_doc_number] => 20240246824 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-07-25 [patent_title] => SOLID NANOMATERIAL ADSORBENT [patent_app_type] => utility [patent_app_number] => 18/624173 [patent_app_country] => US [patent_app_date] => 2024-04-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 15699 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 2 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18624173 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/624173
Solid nanomaterial adsorbent Apr 1, 2024 Issued
Array ( [id] => 19571667 [patent_doc_number] => 20240375959 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-11-14 [patent_title] => SCALABLE SYNTHESIS OF PERIMORPHIC MATERIALS [patent_app_type] => utility [patent_app_number] => 18/613221 [patent_app_country] => US [patent_app_date] => 2024-03-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 116316 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 18 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18613221 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/613221
SCALABLE SYNTHESIS OF PERIMORPHIC MATERIALS Mar 21, 2024 Pending
Array ( [id] => 20263279 [patent_doc_number] => 12434250 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-10-07 [patent_title] => Method of forming graphene quantum dots from coal [patent_app_type] => utility [patent_app_number] => 18/602454 [patent_app_country] => US [patent_app_date] => 2024-03-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 15 [patent_no_of_words] => 5960 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 56 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18602454 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/602454
Method of forming graphene quantum dots from coal Mar 11, 2024 Issued
Array ( [id] => 19763073 [patent_doc_number] => 12221346 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-02-11 [patent_title] => Columnar-carbon and graphene-plate lattice composite [patent_app_type] => utility [patent_app_number] => 18/602160 [patent_app_country] => US [patent_app_date] => 2024-03-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 24 [patent_figures_cnt] => 29 [patent_no_of_words] => 6917 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 100 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18602160 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/602160
Columnar-carbon and graphene-plate lattice composite Mar 11, 2024 Issued
Array ( [id] => 19332982 [patent_doc_number] => 20240247412 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-07-25 [patent_title] => Apparatus and Method for Microwave Carbonization of Polymeric Materials for Carbon Fiber Production [patent_app_type] => utility [patent_app_number] => 18/583847 [patent_app_country] => US [patent_app_date] => 2024-02-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9242 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 151 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18583847 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/583847
Apparatus and Method for Microwave Carbonization of Polymeric Materials for Carbon Fiber Production Feb 20, 2024 Pending
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