Search

David E. Choi

Examiner (ID: 18884, Phone: (571)270-3780 , Office: P/2174 )

Most Active Art Unit
2174
Art Unit(s)
2174, 2173, 2148
Total Applications
778
Issued Applications
591
Pending Applications
55
Abandoned Applications
150

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 17775501 [patent_doc_number] => 20220241850 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-08-04 [patent_title] => MOLD FOR CONTINUOUS CASTING OF METALS, TEMPERATURE MEASUREMENT SYSTEM AND SYSTEM AND METHOD FOR DETECTING BREAKTHROUGH IN A FACILITY FOR CONTINUOUS CASTING OF METALS [patent_app_type] => utility [patent_app_number] => 17/620691 [patent_app_country] => US [patent_app_date] => 2020-06-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4476 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 53 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17620691 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/620691
MOLD FOR CONTINUOUS CASTING OF METALS, TEMPERATURE MEASUREMENT SYSTEM AND SYSTEM AND METHOD FOR DETECTING BREAKTHROUGH IN A FACILITY FOR CONTINUOUS CASTING OF METALS Jun 21, 2020 Pending
Array ( [id] => 17989334 [patent_doc_number] => 20220355371 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-11-10 [patent_title] => METHOD FOR BALANCING A FLOW OF LIQUID STEEL INTO A CASTING MOLD AND CONTINUOUS CASTING SYSTEM FOR LIQUID STEEL [patent_app_type] => utility [patent_app_number] => 17/619986 [patent_app_country] => US [patent_app_date] => 2020-06-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3464 [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] => 17619986 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/619986
METHOD FOR BALANCING A FLOW OF LIQUID STEEL INTO A CASTING MOLD AND CONTINUOUS CASTING SYSTEM FOR LIQUID STEEL Jun 15, 2020 Pending
Array ( [id] => 17519711 [patent_doc_number] => 20220105559 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-04-07 [patent_title] => CRYSTALLIZER COPPER PLATE AND CONTINUOUS CASTING CRYSTALLIZER [patent_app_type] => utility [patent_app_number] => 17/428457 [patent_app_country] => US [patent_app_date] => 2020-06-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6070 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 148 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17428457 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/428457
Crystallizer copper plate and continuous casting crystallizer Jun 15, 2020 Issued
Array ( [id] => 17199215 [patent_doc_number] => 20210339309 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-11-04 [patent_title] => METHOD OF FORMING PARALLEL SPIRAL CHANNELS IN HOUSING TO BE FORMED BY CASTING OR MOLDING PROCESS [patent_app_type] => utility [patent_app_number] => 16/861957 [patent_app_country] => US [patent_app_date] => 2020-04-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5518 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 129 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16861957 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/861957
Method of forming parallel spiral channels in housing to be formed by casting or molding process Apr 28, 2020 Issued
Array ( [id] => 17641834 [patent_doc_number] => 20220169572 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-06-02 [patent_title] => INVESTMENT POWDER [patent_app_type] => utility [patent_app_number] => 17/599288 [patent_app_country] => US [patent_app_date] => 2020-03-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4386 [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] => 17599288 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/599288
INVESTMENT POWDER Mar 25, 2020 Pending
Array ( [id] => 17775504 [patent_doc_number] => 20220241853 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-08-04 [patent_title] => ELECTROMAGNETIC VIBRATION STIRRING DEVICE OF SEMI-SOLID HIGH PRESSURE CASTING EQUIPMENT [patent_app_type] => utility [patent_app_number] => 17/595959 [patent_app_country] => US [patent_app_date] => 2020-03-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5775 [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] => 17595959 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/595959
ELECTROMAGNETIC VIBRATION STIRRING DEVICE OF SEMI-SOLID HIGH PRESSURE CASTING EQUIPMENT Mar 15, 2020 Abandoned
Array ( [id] => 18369571 [patent_doc_number] => 11649731 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-05-16 [patent_title] => Airfoil having internal hybrid cooling cavities [patent_app_type] => utility [patent_app_number] => 16/811249 [patent_app_country] => US [patent_app_date] => 2020-03-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 18 [patent_figures_cnt] => 21 [patent_no_of_words] => 14162 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 503 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16811249 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/811249
Airfoil having internal hybrid cooling cavities Mar 5, 2020 Issued
Array ( [id] => 16806660 [patent_doc_number] => 20210129213 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-05-06 [patent_title] => VACCUM DIE CASTING METHOD AND A DIE FOR VACCUM DIE CASTING [patent_app_type] => utility [patent_app_number] => 16/791369 [patent_app_country] => US [patent_app_date] => 2020-02-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4198 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [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] => 16791369 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/791369
VACCUM DIE CASTING METHOD AND A DIE FOR VACCUM DIE CASTING Feb 13, 2020 Abandoned
Array ( [id] => 16221745 [patent_doc_number] => 20200246861 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-08-06 [patent_title] => METHOD OF INVESTMENT CASTING CHAPLET [patent_app_type] => utility [patent_app_number] => 16/750641 [patent_app_country] => US [patent_app_date] => 2020-01-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3140 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 88 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16750641 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/750641
METHOD OF INVESTMENT CASTING CHAPLET Jan 22, 2020 Abandoned
Array ( [id] => 18684292 [patent_doc_number] => 11780002 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-10-10 [patent_title] => Electromagnetic device for laterally containing liquid metal in a casting of metal products [patent_app_type] => utility [patent_app_number] => 17/421178 [patent_app_country] => US [patent_app_date] => 2020-01-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 13 [patent_no_of_words] => 5627 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 257 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17421178 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/421178
Electromagnetic device for laterally containing liquid metal in a casting of metal products Jan 15, 2020 Issued
Array ( [id] => 16931364 [patent_doc_number] => 20210197253 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-07-01 [patent_title] => Ceramic Metal Riser Tube Stalk [patent_app_type] => utility [patent_app_number] => 16/729378 [patent_app_country] => US [patent_app_date] => 2019-12-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1499 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => 0 [patent_words_short_claim] => 21 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16729378 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/729378
Ceramic Metal Riser Tube Stalk Dec 27, 2019 Abandoned
Array ( [id] => 17814660 [patent_doc_number] => 11420252 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-08-23 [patent_title] => Punch pin assembly and die casting machine having punch pin assembly [patent_app_type] => utility [patent_app_number] => 16/712074 [patent_app_country] => US [patent_app_date] => 2019-12-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 4200 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 505 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16712074 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/712074
Punch pin assembly and die casting machine having punch pin assembly Dec 11, 2019 Issued
Array ( [id] => 17413193 [patent_doc_number] => 20220048097 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-02-17 [patent_title] => CASTING SLURRY FOR THE PRODUCTION OF SHELL MOLDS [patent_app_type] => utility [patent_app_number] => 17/309616 [patent_app_country] => US [patent_app_date] => 2019-12-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2863 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 57 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17309616 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/309616
CASTING SLURRY FOR THE PRODUCTION OF SHELL MOLDS Dec 4, 2019 Pending
Array ( [id] => 17392741 [patent_doc_number] => 11241732 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-02-08 [patent_title] => Casting product with tubular flow passages, method of casting the same product, and cast-in pipe insert unit [patent_app_type] => utility [patent_app_number] => 16/696630 [patent_app_country] => US [patent_app_date] => 2019-11-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 18 [patent_figures_cnt] => 19 [patent_no_of_words] => 3857 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 166 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16696630 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/696630
Casting product with tubular flow passages, method of casting the same product, and cast-in pipe insert unit Nov 25, 2019 Issued
Array ( [id] => 17783920 [patent_doc_number] => 11407026 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-08-09 [patent_title] => Rolling ingot mould for the continuous casting of aluminium and aluminium alloys [patent_app_type] => utility [patent_app_number] => 17/299143 [patent_app_country] => US [patent_app_date] => 2019-11-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 3796 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 107 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17299143 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/299143
Rolling ingot mould for the continuous casting of aluminium and aluminium alloys Nov 21, 2019 Issued
Array ( [id] => 17291410 [patent_doc_number] => 20210387249 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-12-16 [patent_title] => SLAB CASTING METHOD [patent_app_type] => utility [patent_app_number] => 17/283131 [patent_app_country] => US [patent_app_date] => 2019-10-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9173 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -3 [patent_words_short_claim] => 201 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17283131 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/283131
Slab casting method Oct 20, 2019 Issued
Array ( [id] => 15798169 [patent_doc_number] => 20200122227 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-04-23 [patent_title] => CONTINUOUS CASTING APPARATUS FOR METAL AND CONTINUOUS CASTING METHOD [patent_app_type] => utility [patent_app_number] => 16/657308 [patent_app_country] => US [patent_app_date] => 2019-10-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4860 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -6 [patent_words_short_claim] => 121 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16657308 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/657308
CONTINUOUS CASTING APPARATUS FOR METAL AND CONTINUOUS CASTING METHOD Oct 17, 2019 Abandoned
Array ( [id] => 16777008 [patent_doc_number] => 20210114085 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-04-22 [patent_title] => INTEGRAL CORE BUMPERS [patent_app_type] => utility [patent_app_number] => 16/654902 [patent_app_country] => US [patent_app_date] => 2019-10-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5580 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 16654902 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/654902
Integral core bumpers Oct 15, 2019 Issued
Array ( [id] => 15766801 [patent_doc_number] => 20200114418 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-04-16 [patent_title] => METHOD AND APPARATUS FOR ALIGNING NOZZLES FOR DIE CASTING [patent_app_type] => utility [patent_app_number] => 16/594501 [patent_app_country] => US [patent_app_date] => 2019-10-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3241 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 64 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16594501 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/594501
METHOD AND APPARATUS FOR ALIGNING NOZZLES FOR DIE CASTING Oct 6, 2019 Abandoned
Array ( [id] => 18544548 [patent_doc_number] => 11717883 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-08-08 [patent_title] => Method for manufacturing cast strip [patent_app_type] => utility [patent_app_number] => 17/278964 [patent_app_country] => US [patent_app_date] => 2019-10-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 5926 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 311 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17278964 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/278964
Method for manufacturing cast strip Oct 2, 2019 Issued
Menu