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] => 18126310 [patent_doc_number] => 20230011930 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-01-12 [patent_title] => LITHIUM SECONDARY BATTERY AND BATTERY SYSTEM [patent_app_type] => utility [patent_app_number] => 17/785323 [patent_app_country] => US [patent_app_date] => 2020-12-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11374 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -2 [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] => 17785323 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/785323
LITHIUM SECONDARY BATTERY AND BATTERY SYSTEM Dec 15, 2020 Pending
Array ( [id] => 16962018 [patent_doc_number] => 20210213517 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-07-15 [patent_title] => PLUNGER TIP, INJECTION DEVICE, AND INJECTION METHOD [patent_app_type] => utility [patent_app_number] => 17/109254 [patent_app_country] => US [patent_app_date] => 2020-12-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4792 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -7 [patent_words_short_claim] => 91 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17109254 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/109254
PLUNGER TIP, INJECTION DEVICE, AND INJECTION METHOD Dec 1, 2020 Abandoned
Array ( [id] => 16838571 [patent_doc_number] => 20210146583 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-05-20 [patent_title] => CORE FOR HOLLOW PRODUCT MANUFACTURE INCLUDING MULTILAYER FILLING MATERIAL AND METHOD OF MANUFACTURING HOLLOW PRODUCT USING THE CORE [patent_app_type] => utility [patent_app_number] => 16/951386 [patent_app_country] => US [patent_app_date] => 2020-11-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4939 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [patent_words_short_claim] => 112 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16951386 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/951386
Core for hollow product manufacture including multilayer filling material and method of manufacturing hollow product using the core Nov 17, 2020 Issued
Array ( [id] => 16914513 [patent_doc_number] => 20210187605 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-06-24 [patent_title] => ROTATING INDEXING APPARATUS FOR CONVEYING SAND MOLDS [patent_app_type] => utility [patent_app_number] => 17/098584 [patent_app_country] => US [patent_app_date] => 2020-11-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4988 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 35 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17098584 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/098584
ROTATING INDEXING APPARATUS FOR CONVEYING SAND MOLDS Nov 15, 2020 Abandoned
Array ( [id] => 18165463 [patent_doc_number] => 20230032062 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-02-02 [patent_title] => METHOD FOR OPERATING A SYSTEM OF THE IRON AND STEEL INDUSTRY [patent_app_type] => utility [patent_app_number] => 17/778162 [patent_app_country] => US [patent_app_date] => 2020-10-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3243 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [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] => 17778162 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/778162
Method for operating a system of the iron and steel industry Oct 27, 2020 Issued
Array ( [id] => 19490923 [patent_doc_number] => 12109610 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-10-08 [patent_title] => Apparatus and method for molding material [patent_app_type] => utility [patent_app_number] => 17/758592 [patent_app_country] => US [patent_app_date] => 2020-10-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 22 [patent_figures_cnt] => 22 [patent_no_of_words] => 8624 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 301 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17758592 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/758592
Apparatus and method for molding material Oct 27, 2020 Issued
Array ( [id] => 18019586 [patent_doc_number] => 20220371085 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-11-24 [patent_title] => ALUMINUM CASTING METHOD AND MOLD [patent_app_type] => utility [patent_app_number] => 17/770097 [patent_app_country] => US [patent_app_date] => 2020-10-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8830 [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] => 17770097 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/770097
ALUMINUM CASTING METHOD AND MOLD Oct 25, 2020 Abandoned
Array ( [id] => 16884282 [patent_doc_number] => 20210170477 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-06-10 [patent_title] => Venting Device For Venting a Casting Mold Having a Saw-Toothed Gap [patent_app_type] => utility [patent_app_number] => 17/075170 [patent_app_country] => US [patent_app_date] => 2020-10-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2217 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 150 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17075170 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/075170
Venting device for venting a casting mold having a saw-toothed gap Oct 19, 2020 Issued
Array ( [id] => 19939319 [patent_doc_number] => 12311435 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-05-27 [patent_title] => Preparation method for aluminum alloy cavity casting filled with special-shaped foamed aluminum [patent_app_type] => utility [patent_app_number] => 17/775453 [patent_app_country] => US [patent_app_date] => 2020-10-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 4 [patent_no_of_words] => 0 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 259 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17775453 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/775453
Preparation method for aluminum alloy cavity casting filled with special-shaped foamed aluminum Oct 19, 2020 Issued
Array ( [id] => 16556248 [patent_doc_number] => 20210001396 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-01-07 [patent_title] => METHOD FOR CASTING METAL STRIP WITH CROWN CONTROL [patent_app_type] => utility [patent_app_number] => 17/029983 [patent_app_country] => US [patent_app_date] => 2020-09-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10066 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -21 [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] => 17029983 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/029983
METHOD FOR CASTING METAL STRIP WITH CROWN CONTROL Sep 22, 2020 Abandoned
Array ( [id] => 20271124 [patent_doc_number] => 12440890 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-10-14 [patent_title] => Apparatus and method for producing and further processing of slabs [patent_app_type] => utility [patent_app_number] => 17/762338 [patent_app_country] => US [patent_app_date] => 2020-09-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 3512 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 359 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17762338 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/762338
Apparatus and method for producing and further processing of slabs Sep 20, 2020 Issued
Array ( [id] => 17472990 [patent_doc_number] => 20220080494 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-03-17 [patent_title] => METHODS FOR CASTING A COMPONENT HAVING A READILY REMOVABLE CASTING CORE [patent_app_type] => utility [patent_app_number] => 17/019646 [patent_app_country] => US [patent_app_date] => 2020-09-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8276 [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] => 17019646 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/019646
Methods for casting a component having a readily removable casting core Sep 13, 2020 Issued
Array ( [id] => 20360331 [patent_doc_number] => 12476338 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-11-18 [patent_title] => Secondary battery [patent_app_type] => utility [patent_app_number] => 17/634462 [patent_app_country] => US [patent_app_date] => 2020-09-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 13 [patent_no_of_words] => 0 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 235 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17634462 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/634462
Secondary battery Sep 10, 2020 Issued
Array ( [id] => 19652232 [patent_doc_number] => 12174010 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-12-24 [patent_title] => In-mold solidified shell thickness estimation apparatus, in-mold solidified shell thickness estimation method, and continuous steel casting method [patent_app_type] => utility [patent_app_number] => 17/761642 [patent_app_country] => US [patent_app_date] => 2020-09-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 15 [patent_figures_cnt] => 19 [patent_no_of_words] => 9220 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 284 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17761642 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/761642
In-mold solidified shell thickness estimation apparatus, in-mold solidified shell thickness estimation method, and continuous steel casting method Sep 3, 2020 Issued
Array ( [id] => 17829026 [patent_doc_number] => 20220266330 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-08-25 [patent_title] => Core for a Valve Housing, and Method for Producing the Core [patent_app_type] => utility [patent_app_number] => 17/631656 [patent_app_country] => US [patent_app_date] => 2020-08-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3921 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 111 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17631656 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/631656
Core for a valve housing, and method for producing the core Aug 9, 2020 Issued
Array ( [id] => 19826502 [patent_doc_number] => 12247269 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-03-11 [patent_title] => Method and apparatus for processing a liquid alloy [patent_app_type] => utility [patent_app_number] => 16/932068 [patent_app_country] => US [patent_app_date] => 2020-07-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 5135 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 243 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16932068 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/932068
Method and apparatus for processing a liquid alloy Jul 16, 2020 Issued
Array ( [id] => 16397776 [patent_doc_number] => 20200338634 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-10-29 [patent_title] => Method and device for Overall Temperature Control Close to the Mould Cavity of Temperature-Controlled Shell-Type Moulds, Using Intercommunicating Media in Polyhedral Spaces [patent_app_type] => utility [patent_app_number] => 16/926655 [patent_app_country] => US [patent_app_date] => 2020-07-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 20002 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -3 [patent_words_short_claim] => 113 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16926655 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/926655
Method and device for Overall Temperature Control Close to the Mould Cavity of Temperature-Controlled Shell-Type Moulds, Using Intercommunicating Media in Polyhedral Spaces Jul 10, 2020 Abandoned
Array ( [id] => 17791050 [patent_doc_number] => 20220250141 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-08-11 [patent_title] => METHOD FOR CASTING Ti-Al BASED ALLOY [patent_app_type] => utility [patent_app_number] => 17/630322 [patent_app_country] => US [patent_app_date] => 2020-07-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4436 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => 0 [patent_words_short_claim] => 91 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17630322 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/630322
METHOD FOR CASTING Ti-Al BASED ALLOY Jul 9, 2020 Abandoned
Array ( [id] => 17806392 [patent_doc_number] => 20220258227 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-08-18 [patent_title] => CASTING EQUIPMENT AND CASTING METHOD [patent_app_type] => utility [patent_app_number] => 17/628463 [patent_app_country] => US [patent_app_date] => 2020-07-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 12911 [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] => 17628463 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/628463
CASTING EQUIPMENT AND CASTING METHOD Jun 30, 2020 Pending
Array ( [id] => 17981706 [patent_doc_number] => 20220347742 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-11-03 [patent_title] => Arrangement for Low-Pressure Casting of Refractory Metals [patent_app_type] => utility [patent_app_number] => 17/621501 [patent_app_country] => US [patent_app_date] => 2020-06-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3547 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [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] => 17621501 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/621501
Arrangement for low-pressure casting of refractory metals Jun 22, 2020 Issued
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