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] => 18004074 [patent_doc_number] => 20220362840 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-11-17 [patent_title] => MOLD DEGASSING DEVICE [patent_app_type] => utility [patent_app_number] => 17/766094 [patent_app_country] => US [patent_app_date] => 2019-10-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9294 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -5 [patent_words_short_claim] => 284 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17766094 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/766094
MOLD DEGASSING DEVICE Oct 1, 2019 Abandoned
Array ( [id] => 17335111 [patent_doc_number] => 20220001442 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-01-06 [patent_title] => METHOD TO PRODUCE A METAL STRIP, AND PRODUCTION PLANT IMPLEMENTING SAID METHOD [patent_app_type] => utility [patent_app_number] => 17/283820 [patent_app_country] => US [patent_app_date] => 2019-09-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9634 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 210 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17283820 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/283820
METHOD TO PRODUCE A METAL STRIP, AND PRODUCTION PLANT IMPLEMENTING SAID METHOD Sep 24, 2019 Abandoned
Array ( [id] => 17213608 [patent_doc_number] => 20210346944 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-11-11 [patent_title] => CASTING MOULD FOR PRODUCING HELICAL CAST BODIES [patent_app_type] => utility [patent_app_number] => 17/250888 [patent_app_country] => US [patent_app_date] => 2019-09-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2653 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 102 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17250888 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/250888
Casting mould for producing helical cast bodies Sep 18, 2019 Issued
Array ( [id] => 17213602 [patent_doc_number] => 20210346938 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-11-11 [patent_title] => METHOD AND DEVICE FOR PRODUCING A HELICAL METAL BODY [patent_app_type] => utility [patent_app_number] => 17/277711 [patent_app_country] => US [patent_app_date] => 2019-09-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3497 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [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] => 17277711 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/277711
METHOD AND DEVICE FOR PRODUCING A HELICAL METAL BODY Sep 18, 2019 Abandoned
Array ( [id] => 16605578 [patent_doc_number] => 10906567 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-02-02 [patent_title] => Process for producing a coupler knuckle and improved coupler knuckle [patent_app_type] => utility [patent_app_number] => 16/558230 [patent_app_country] => US [patent_app_date] => 2019-09-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 15 [patent_no_of_words] => 6563 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 362 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16558230 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/558230
Process for producing a coupler knuckle and improved coupler knuckle Sep 1, 2019 Issued
Array ( [id] => 16869025 [patent_doc_number] => 20210162492 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-06-03 [patent_title] => BACK-SPRAY SYSTEM AND INJECTION PISTON [patent_app_type] => utility [patent_app_number] => 17/261942 [patent_app_country] => US [patent_app_date] => 2019-07-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3088 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -6 [patent_words_short_claim] => 127 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17261942 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/261942
BACK-SPRAY SYSTEM AND INJECTION PISTON Jul 22, 2019 Abandoned
Array ( [id] => 17111627 [patent_doc_number] => 20210292224 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-09-23 [patent_title] => RECOVERING SAND, BENTONITE AND ORGANICS FROM FOUNDRY SAND WASTE [patent_app_type] => utility [patent_app_number] => 17/261683 [patent_app_country] => US [patent_app_date] => 2019-07-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5768 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 65 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17261683 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/261683
Recovering sand, bentonite and organics from foundry sand waste Jul 18, 2019 Issued
Array ( [id] => 17066358 [patent_doc_number] => 20210268573 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-09-02 [patent_title] => Method for Containing a Slab During Continuous Casting [patent_app_type] => utility [patent_app_number] => 17/256001 [patent_app_country] => US [patent_app_date] => 2019-06-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3756 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 130 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17256001 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/256001
Method for containing a slab during continuous casting Jun 24, 2019 Issued
Array ( [id] => 18246219 [patent_doc_number] => 11602783 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-03-14 [patent_title] => Apparatus and method for producing a cast part formed from amorphous or partially amorphous metal, and cast part [patent_app_type] => utility [patent_app_number] => 17/253258 [patent_app_country] => US [patent_app_date] => 2019-06-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 11 [patent_no_of_words] => 4218 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 230 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17253258 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/253258
Apparatus and method for producing a cast part formed from amorphous or partially amorphous metal, and cast part Jun 24, 2019 Issued
Array ( [id] => 18289213 [patent_doc_number] => 11618072 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-04-04 [patent_title] => Thin strip manufacture method [patent_app_type] => utility [patent_app_number] => 17/054977 [patent_app_country] => US [patent_app_date] => 2019-05-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 5 [patent_no_of_words] => 3867 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 164 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17054977 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/054977
Thin strip manufacture method May 26, 2019 Issued
Array ( [id] => 16620509 [patent_doc_number] => 20210039162 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-02-11 [patent_title] => DEVICE AND METHOD FOR HANDLING OF CAST PRODUCT [patent_app_type] => utility [patent_app_number] => 17/044498 [patent_app_country] => US [patent_app_date] => 2019-05-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4299 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [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] => 17044498 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/044498
DEVICE AND METHOD FOR HANDLING OF CAST PRODUCT May 13, 2019 Abandoned
Array ( [id] => 15322055 [patent_doc_number] => 20200001357 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-01-02 [patent_title] => DIE CASTING APPARATUS [patent_app_type] => utility [patent_app_number] => 16/406518 [patent_app_country] => US [patent_app_date] => 2019-05-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4191 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -3 [patent_words_short_claim] => 82 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16406518 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/406518
Die casting apparatus May 7, 2019 Issued
Array ( [id] => 14683227 [patent_doc_number] => 20190240728 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-08-08 [patent_title] => NEGATIVE PRESSURE UPDRAUGHT POURING DEVICE AND METHOD [patent_app_type] => utility [patent_app_number] => 16/390778 [patent_app_country] => US [patent_app_date] => 2019-04-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5397 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 204 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16390778 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/390778
NEGATIVE PRESSURE UPDRAUGHT POURING DEVICE AND METHOD Apr 21, 2019 Abandoned
Array ( [id] => 17696317 [patent_doc_number] => 11370020 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-06-28 [patent_title] => Levitation melting process [patent_app_type] => utility [patent_app_number] => 17/048842 [patent_app_country] => US [patent_app_date] => 2019-04-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 3301 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 192 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17048842 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/048842
Levitation melting process Apr 17, 2019 Issued
Array ( [id] => 14927281 [patent_doc_number] => 20190299278 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-10-03 [patent_title] => DIE CASTING SYSTEM AND METHOD UTILIZING HIGH MELTING TEMPERATURE MATERIALS [patent_app_type] => utility [patent_app_number] => 16/384083 [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] => 2275 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 191 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16384083 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/384083
DIE CASTING SYSTEM AND METHOD UTILIZING HIGH MELTING TEMPERATURE MATERIALS Apr 14, 2019 Abandoned
Array ( [id] => 17247745 [patent_doc_number] => 20210367490 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-11-25 [patent_title] => METHOD FOR PRODUCING A HELICAL ELECTRICALLY CONDUCTING BODY [patent_app_type] => utility [patent_app_number] => 17/045971 [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] => 3343 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -24 [patent_words_short_claim] => 1 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17045971 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/045971
METHOD FOR PRODUCING A HELICAL ELECTRICALLY CONDUCTING BODY Apr 10, 2019 Abandoned
Array ( [id] => 16359929 [patent_doc_number] => 20200316680 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-10-08 [patent_title] => LOW-PRESSURE CASTING FURNACE SYSTEM [patent_app_type] => utility [patent_app_number] => 16/375148 [patent_app_country] => US [patent_app_date] => 2019-04-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1951 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 44 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16375148 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/375148
LOW-PRESSURE CASTING FURNACE SYSTEM Apr 3, 2019 Abandoned
Array ( [id] => 17844097 [patent_doc_number] => 11433442 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-09-06 [patent_title] => Continuous casting and rolling plant for the production of metallurgical products [patent_app_type] => utility [patent_app_number] => 17/043556 [patent_app_country] => US [patent_app_date] => 2019-04-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 6259 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 307 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17043556 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/043556
Continuous casting and rolling plant for the production of metallurgical products Apr 2, 2019 Issued
Array ( [id] => 15021755 [patent_doc_number] => 20190321882 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-10-24 [patent_title] => MELTING UNIT FOR A MOULDING MACHINE AND A MOULDING MACHINE [patent_app_type] => utility [patent_app_number] => 16/371877 [patent_app_country] => US [patent_app_date] => 2019-04-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2497 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 106 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16371877 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/371877
MELTING UNIT FOR A MOULDING MACHINE AND A MOULDING MACHINE Mar 31, 2019 Abandoned
Array ( [id] => 16597078 [patent_doc_number] => 20210023609 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-01-28 [patent_title] => COMPOSITIONS COMPRISING OXIDIZED MATERIALS FOR SAND CASTING AND METHODS OF PREPARATION AND USE THEREOF [patent_app_type] => utility [patent_app_number] => 17/041065 [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] => 8445 [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] => 17041065 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/041065
COMPOSITIONS COMPRISING OXIDIZED MATERIALS FOR SAND CASTING AND METHODS OF PREPARATION AND USE THEREOF Mar 28, 2019 Abandoned
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