Search

David Thomas Karst

Examiner (ID: 10871, Phone: (571)270-7732 , Office: P/1767 )

Most Active Art Unit
1767
Art Unit(s)
1767, 1796
Total Applications
1136
Issued Applications
657
Pending Applications
125
Abandoned Applications
381

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 20716374 [patent_doc_number] => 12631616 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-05-19 [patent_title] => Method of analyzing copolycarbonate [patent_app_type] => utility [patent_app_number] => 17/617196 [patent_app_country] => US [patent_app_date] => 2020-06-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1164 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 170 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17617196 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/617196
Method of analyzing copolycarbonate Jun 18, 2020 Issued
Array ( [id] => 19027348 [patent_doc_number] => 11926695 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-03-12 [patent_title] => High-thermal conductive epoxy compound and composition, material for semiconductor package, molded product, electric and electronic device, and semiconductor package including the same [patent_app_type] => utility [patent_app_number] => 16/898761 [patent_app_country] => US [patent_app_date] => 2020-06-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 8 [patent_no_of_words] => 11988 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 306 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16898761 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/898761
High-thermal conductive epoxy compound and composition, material for semiconductor package, molded product, electric and electronic device, and semiconductor package including the same Jun 10, 2020 Issued
Array ( [id] => 17882717 [patent_doc_number] => 20220298194 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-09-22 [patent_title] => PROCESSED LIGNIN AND PROCESS TO PREPARE SUCH [patent_app_type] => utility [patent_app_number] => 17/616105 [patent_app_country] => US [patent_app_date] => 2020-06-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4836 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 72 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17616105 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/616105
Processed lignin and process to prepare such Jun 7, 2020 Issued
Array ( [id] => 17929769 [patent_doc_number] => 20220324894 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-10-13 [patent_title] => PROCESSES FOR EXTRACTING LIGNIN FROM BLACK LIQUOR [patent_app_type] => utility [patent_app_number] => 17/616380 [patent_app_country] => US [patent_app_date] => 2020-06-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7767 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [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] => 17616380 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/616380
PROCESSES FOR EXTRACTING LIGNIN FROM BLACK LIQUOR May 31, 2020 Abandoned
Array ( [id] => 16269019 [patent_doc_number] => 20200270506 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-08-27 [patent_title] => Water-Soluble Or Water-Swellable Polymers As Water Loss Reducers In Cement Slurries [patent_app_type] => utility [patent_app_number] => 15/931339 [patent_app_country] => US [patent_app_date] => 2020-05-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11106 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [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] => 15931339 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/931339
Water-soluble or water-swellable polymers as water loss reducers in cement slurries May 12, 2020 Issued
Array ( [id] => 16238439 [patent_doc_number] => 20200255673 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-08-13 [patent_title] => CORROSION INHIBITOR FOR ANTI-CORROSION COATINGS [patent_app_type] => utility [patent_app_number] => 16/857040 [patent_app_country] => US [patent_app_date] => 2020-04-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5611 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 147 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16857040 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/857040
CORROSION INHIBITOR FOR ANTI-CORROSION COATINGS Apr 22, 2020 Abandoned
Array ( [id] => 16312450 [patent_doc_number] => 20200291188 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-09-17 [patent_title] => EPOXY-FUNCTIONALIZED POLYORGANOSILOXANE TOUGHENER [patent_app_type] => utility [patent_app_number] => 16/816976 [patent_app_country] => US [patent_app_date] => 2020-03-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2858 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -20 [patent_words_short_claim] => 165 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16816976 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/816976
Epoxy-functionalized polyorganosiloxane toughener Mar 11, 2020 Issued
Array ( [id] => 17563147 [patent_doc_number] => 20220127296 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-04-28 [patent_title] => PROCESS FOR PRODUCING AGGLOMERATED LIGNIN AND USE THEREOF [patent_app_type] => utility [patent_app_number] => 17/438570 [patent_app_country] => US [patent_app_date] => 2020-03-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3550 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -5 [patent_words_short_claim] => 168 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17438570 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/438570
Process for producing agglomerated lignin and use thereof Mar 10, 2020 Issued
Array ( [id] => 17563272 [patent_doc_number] => 20220127421 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-04-28 [patent_title] => POLYURETHANE COPOLYMERS AND BLENDS, METHODS OF MANUFACTURE THEREOF AND ARTICLES CONTAINING THE SAME [patent_app_type] => utility [patent_app_number] => 17/434512 [patent_app_country] => US [patent_app_date] => 2020-03-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8959 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [patent_words_short_claim] => 19 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17434512 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/434512
POLYURETHANE COPOLYMERS AND BLENDS, METHODS OF MANUFACTURE THEREOF AND ARTICLES CONTAINING THE SAME Mar 4, 2020 Abandoned
Array ( [id] => 16090825 [patent_doc_number] => 20200199399 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-06-25 [patent_title] => New gel-coat additivated with titanium dioxide and alumina particles [patent_app_type] => utility [patent_app_number] => 16/805812 [patent_app_country] => US [patent_app_date] => 2020-03-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4775 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -5 [patent_words_short_claim] => 104 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16805812 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/805812
New gel-coat additivated with titanium dioxide and alumina particles Feb 29, 2020 Abandoned
Array ( [id] => 16963015 [patent_doc_number] => 20210214514 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-07-15 [patent_title] => POROUS BODY, AND METHOD FOR PRODUCING POROUS BODY [patent_app_type] => utility [patent_app_number] => 15/734138 [patent_app_country] => US [patent_app_date] => 2020-02-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 20488 [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] => 15734138 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/734138
Porous body, and method for producing porous body Feb 26, 2020 Issued
Array ( [id] => 16613861 [patent_doc_number] => 20210032514 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-02-04 [patent_title] => ADHESIVE FOR EUV MASK, CLEANING METHOD OF THE SAME, AND REUSING METHOD OF EUV MASK USING THE SAME [patent_app_type] => utility [patent_app_number] => 16/801677 [patent_app_country] => US [patent_app_date] => 2020-02-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3645 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 16801677 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/801677
ADHESIVE FOR EUV MASK, CLEANING METHOD OF THE SAME, AND REUSING METHOD OF EUV MASK USING THE SAME Feb 25, 2020 Abandoned
Array ( [id] => 17497641 [patent_doc_number] => 11286334 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-03-29 [patent_title] => Method of preparing a latent hardener with improved storage stability through a dry surface treatment [patent_app_type] => utility [patent_app_number] => 16/788519 [patent_app_country] => US [patent_app_date] => 2020-02-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 6321 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 54 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16788519 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/788519
Method of preparing a latent hardener with improved storage stability through a dry surface treatment Feb 11, 2020 Issued
Array ( [id] => 17563146 [patent_doc_number] => 20220127295 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-04-28 [patent_title] => Method for lignin purification [patent_app_type] => utility [patent_app_number] => 17/429368 [patent_app_country] => US [patent_app_date] => 2020-02-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3344 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [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] => 17429368 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/429368
Method for lignin purification Feb 9, 2020 Issued
Array ( [id] => 18102541 [patent_doc_number] => 11542419 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-01-03 [patent_title] => Cycloaliphatic-based epoxy adhesive composition [patent_app_type] => utility [patent_app_number] => 16/780314 [patent_app_country] => US [patent_app_date] => 2020-02-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8964 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 148 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16780314 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/780314
Cycloaliphatic-based epoxy adhesive composition Feb 2, 2020 Issued
Array ( [id] => 17443695 [patent_doc_number] => 20220064200 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-03-03 [patent_title] => Method For Obtaining Low Molecular Weight Lignin [patent_app_type] => utility [patent_app_number] => 17/420921 [patent_app_country] => US [patent_app_date] => 2020-01-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4057 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 48 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17420921 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/420921
Method for obtaining low molecular weight lignin Jan 2, 2020 Issued
Array ( [id] => 17193190 [patent_doc_number] => 11161932 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-11-02 [patent_title] => Resin composition, resin film, semiconductor laminate, method for producing semiconductor laminate and method for producing semiconductor device [patent_app_type] => utility [patent_app_number] => 16/733046 [patent_app_country] => US [patent_app_date] => 2020-01-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8178 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 118 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16733046 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/733046
Resin composition, resin film, semiconductor laminate, method for producing semiconductor laminate and method for producing semiconductor device Jan 1, 2020 Issued
Array ( [id] => 18643389 [patent_doc_number] => 11767449 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-09-26 [patent_title] => Epoxy resin composition and electronic component device [patent_app_type] => utility [patent_app_number] => 16/731416 [patent_app_country] => US [patent_app_date] => 2019-12-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 9374 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 191 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16731416 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/731416
Epoxy resin composition and electronic component device Dec 30, 2019 Issued
Array ( [id] => 16735573 [patent_doc_number] => 10961208 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2021-03-30 [patent_title] => Product of glycidyl ether of a mono or polyhydric phenol [patent_app_type] => utility [patent_app_number] => 16/726460 [patent_app_country] => US [patent_app_date] => 2019-12-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 10383 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 51 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16726460 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/726460
Product of glycidyl ether of a mono or polyhydric phenol Dec 23, 2019 Issued
Array ( [id] => 18148748 [patent_doc_number] => 20230022605 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-01-26 [patent_title] => SEALANT COMPOSITION [patent_app_type] => utility [patent_app_number] => 17/786414 [patent_app_country] => US [patent_app_date] => 2019-12-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8521 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 93 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17786414 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/786414
SEALANT COMPOSITION Dec 16, 2019 Pending
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