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] => 19473938 [patent_doc_number] => 12104014 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-10-01 [patent_title] => Polycarbonate resin composition and molded body of same [patent_app_type] => utility [patent_app_number] => 17/056577 [patent_app_country] => US [patent_app_date] => 2019-05-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 5193 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 179 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17056577 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/056577
Polycarbonate resin composition and molded body of same May 21, 2019 Issued
Array ( [id] => 16932593 [patent_doc_number] => 20210198482 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-07-01 [patent_title] => POLYCARBONATE COMPOSITION COMPRISING PEARLESCENT PIGMENT AND/OR INTERFERENCE PIGMENT [patent_app_type] => utility [patent_app_number] => 17/058410 [patent_app_country] => US [patent_app_date] => 2019-05-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6992 [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] => 17058410 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/058410
POLYCARBONATE COMPOSITION COMPRISING PEARLESCENT PIGMENT AND/OR INTERFERENCE PIGMENT May 19, 2019 Abandoned
Array ( [id] => 17022405 [patent_doc_number] => 20210246276 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-08-12 [patent_title] => IMPROVED CURATIVE COMPOSITION [patent_app_type] => utility [patent_app_number] => 17/049869 [patent_app_country] => US [patent_app_date] => 2019-05-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3608 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -5 [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] => 17049869 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/049869
IMPROVED CURATIVE COMPOSITION May 16, 2019 Abandoned
Array ( [id] => 18044905 [patent_doc_number] => 11518846 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-12-06 [patent_title] => Accelerator composition for the cure of polyfunctional isocyanates with epoxy resins [patent_app_type] => utility [patent_app_number] => 17/052543 [patent_app_country] => US [patent_app_date] => 2019-05-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 2958 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 23 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17052543 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/052543
Accelerator composition for the cure of polyfunctional isocyanates with epoxy resins May 12, 2019 Issued
Array ( [id] => 17007252 [patent_doc_number] => 20210238413 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-08-05 [patent_title] => SOLID DISPERSION, PREPARATION METHOD THEREFOR, CHAIN-EXTENDED POLYURETHANE USING SAME, AND EPOXY RESIN COMPOSITION COMPRISING SAME [patent_app_type] => utility [patent_app_number] => 17/054286 [patent_app_country] => US [patent_app_date] => 2019-05-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13770 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 47 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17054286 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/054286
Solid dispersion, preparation method therefor, chain-extended polyurethane using same, and epoxy resin composition comprising same May 9, 2019 Issued
Array ( [id] => 15117383 [patent_doc_number] => 20190345324 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-11-14 [patent_title] => CURABLE EPOXY COMPOSITION AND CIRCUIT MATERIAL PREPREG, THERMOSET EPOXY COMPOSITION, AND ARTICLE PREPARED THEREFROM [patent_app_type] => utility [patent_app_number] => 16/404903 [patent_app_country] => US [patent_app_date] => 2019-05-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11047 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 52 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16404903 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/404903
CURABLE EPOXY COMPOSITION AND CIRCUIT MATERIAL PREPREG, THERMOSET EPOXY COMPOSITION, AND ARTICLE PREPARED THEREFROM May 6, 2019 Abandoned
Array ( [id] => 17307432 [patent_doc_number] => 11208525 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-12-28 [patent_title] => Epoxy resin, epoxy resin composition, inorganic filler-containing epoxy resin composition, resin sheet, cured product, and epoxy compound [patent_app_type] => utility [patent_app_number] => 16/400073 [patent_app_country] => US [patent_app_date] => 2019-05-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 15149 [patent_no_of_claims] => 12 [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] => 16400073 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/400073
Epoxy resin, epoxy resin composition, inorganic filler-containing epoxy resin composition, resin sheet, cured product, and epoxy compound Apr 30, 2019 Issued
Array ( [id] => 16778232 [patent_doc_number] => 20210115310 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-04-22 [patent_title] => ADHESION-IMPROVING COMPOSITION FOR TEXTILE MATERIAL AND ASSOCIATED REINFORCING TEXTILE MATERIAL [patent_app_type] => utility [patent_app_number] => 17/050785 [patent_app_country] => US [patent_app_date] => 2019-04-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11608 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [patent_words_short_claim] => 33 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17050785 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/050785
Adhesion-improving composition for textile material and associated reinforcing textile material Apr 25, 2019 Issued
Array ( [id] => 19441255 [patent_doc_number] => 12091496 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-09-17 [patent_title] => Modified phenalkamine curing agent for epoxy resin composition and use thereof [patent_app_type] => utility [patent_app_number] => 17/049361 [patent_app_country] => US [patent_app_date] => 2019-04-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5005 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 89 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17049361 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/049361
Modified phenalkamine curing agent for epoxy resin composition and use thereof Apr 24, 2019 Issued
Array ( [id] => 17938473 [patent_doc_number] => 11472914 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-10-18 [patent_title] => Cardanol based curing agent for epoxy resins compositions [patent_app_type] => utility [patent_app_number] => 17/049366 [patent_app_country] => US [patent_app_date] => 2019-04-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3571 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 93 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17049366 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/049366
Cardanol based curing agent for epoxy resins compositions Apr 24, 2019 Issued
Array ( [id] => 15117387 [patent_doc_number] => 20190345326 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-11-14 [patent_title] => LOW-LOSS INSULATING RESIN COMPOSITION AND INSULATING FILM USING THE SAME [patent_app_type] => utility [patent_app_number] => 16/392858 [patent_app_country] => US [patent_app_date] => 2019-04-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4841 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 41 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16392858 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/392858
LOW-LOSS INSULATING RESIN COMPOSITION AND INSULATING FILM USING THE SAME Apr 23, 2019 Abandoned
Array ( [id] => 16376447 [patent_doc_number] => 20200325289 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-10-15 [patent_title] => CURABLE FILM-FORMING COMPOSITIONS CONTAINING RHEOLOGY MODIFIERS COMPRISING NON-AQUEOUS DISPERSIONS [patent_app_type] => utility [patent_app_number] => 16/383784 [patent_app_country] => US [patent_app_date] => 2019-04-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 16406 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [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] => 16383784 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/383784
CURABLE FILM-FORMING COMPOSITIONS CONTAINING RHEOLOGY MODIFIERS COMPRISING NON-AQUEOUS DISPERSIONS Apr 14, 2019 Abandoned
Array ( [id] => 16778130 [patent_doc_number] => 20210115208 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-04-22 [patent_title] => PREPREG AND CARBON FIBER REINFORCED MATERIAL [patent_app_type] => utility [patent_app_number] => 17/047789 [patent_app_country] => US [patent_app_date] => 2019-04-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 33109 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 273 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17047789 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/047789
PREPREG AND CARBON FIBER REINFORCED MATERIAL Apr 10, 2019 Abandoned
Array ( [id] => 16657499 [patent_doc_number] => 20210054135 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-02-25 [patent_title] => CURING AGENT FOR WATER-BASED EPOXY RESIN, WATER-BASED EPOXY RESIN COMPOSITION, AND CURED PRODUCT THEREOF [patent_app_type] => utility [patent_app_number] => 17/042099 [patent_app_country] => US [patent_app_date] => 2019-04-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 12717 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -7 [patent_words_short_claim] => 119 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17042099 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/042099
Curing agent for water-based epoxy resin, water-based epoxy resin composition, and cured product thereof Apr 9, 2019 Issued
Array ( [id] => 17649848 [patent_doc_number] => 11352562 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-06-07 [patent_title] => Epoxy resin, epoxy resin composition, epoxy resin cured product and composite material [patent_app_type] => utility [patent_app_number] => 16/758972 [patent_app_country] => US [patent_app_date] => 2019-04-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 12715 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 173 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16758972 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/758972
Epoxy resin, epoxy resin composition, epoxy resin cured product and composite material Apr 8, 2019 Issued
Array ( [id] => 18246856 [patent_doc_number] => 11603429 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-03-14 [patent_title] => Phenalkamine epoxy curing agents and epoxy resin compositions containing the same [patent_app_type] => utility [patent_app_number] => 17/041500 [patent_app_country] => US [patent_app_date] => 2019-03-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7027 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 105 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17041500 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/041500
Phenalkamine epoxy curing agents and epoxy resin compositions containing the same Mar 28, 2019 Issued
Array ( [id] => 18246856 [patent_doc_number] => 11603429 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-03-14 [patent_title] => Phenalkamine epoxy curing agents and epoxy resin compositions containing the same [patent_app_type] => utility [patent_app_number] => 17/041500 [patent_app_country] => US [patent_app_date] => 2019-03-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7027 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 105 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17041500 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/041500
Phenalkamine epoxy curing agents and epoxy resin compositions containing the same Mar 28, 2019 Issued
Array ( [id] => 17595507 [patent_doc_number] => 20220145080 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-05-12 [patent_title] => METHOD FOR PRODUCING ULTRAFINE LIGNIN PARTICLES [patent_app_type] => utility [patent_app_number] => 17/598302 [patent_app_country] => US [patent_app_date] => 2019-03-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6443 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 139 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17598302 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/598302
METHOD FOR PRODUCING ULTRAFINE LIGNIN PARTICLES Mar 27, 2019 Abandoned
Array ( [id] => 19060255 [patent_doc_number] => 11939465 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-03-26 [patent_title] => Prepreg and production method therefor, slit tape prepreg, carbon fiber-reinforced composite material [patent_app_type] => utility [patent_app_number] => 17/253205 [patent_app_country] => US [patent_app_date] => 2019-03-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 19630 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 313 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17253205 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/253205
Prepreg and production method therefor, slit tape prepreg, carbon fiber-reinforced composite material Mar 26, 2019 Issued
Array ( [id] => 16621651 [patent_doc_number] => 20210040304 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-02-11 [patent_title] => EPOXY RESIN COMPOSITION [patent_app_type] => utility [patent_app_number] => 16/981805 [patent_app_country] => US [patent_app_date] => 2019-03-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13385 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 39 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16981805 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/981805
Epoxy resin composition Mar 25, 2019 Issued
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