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] => 20041392 [patent_doc_number] => 20250179614 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-06-05 [patent_title] => APPARATUS FOR PROCESSING A LIQUID ALLOY [patent_app_type] => utility [patent_app_number] => 19/048900 [patent_app_country] => US [patent_app_date] => 2025-02-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 0 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 183 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19048900 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/048900
APPARATUS FOR PROCESSING A LIQUID ALLOY Feb 7, 2025 Pending
Array ( [id] => 20039852 [patent_doc_number] => 20250178074 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-06-05 [patent_title] => PROCESS FOR EVAPORATIVE CASTING [patent_app_type] => utility [patent_app_number] => 19/043217 [patent_app_country] => US [patent_app_date] => 2025-01-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3487 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 238 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19043217 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/043217
PROCESS FOR EVAPORATIVE CASTING Jan 30, 2025 Pending
Array ( [id] => 19831430 [patent_doc_number] => 20250083216 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-03-13 [patent_title] => COMPOSITIONS COMPRISING OXIDIZED MATERIALS FOR SAND CASTING AND METHODS OF PREPARATION AND USE THEREOF [patent_app_type] => utility [patent_app_number] => 18/957957 [patent_app_country] => US [patent_app_date] => 2024-11-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8465 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 60 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18957957 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/957957
COMPOSITIONS COMPRISING OXIDIZED MATERIALS FOR SAND CASTING AND METHODS OF PREPARATION AND USE THEREOF Nov 24, 2024 Abandoned
Array ( [id] => 19845771 [patent_doc_number] => 20250091122 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-03-20 [patent_title] => APPARATUS FOR EXTENDING SERVICE LIFE OF SHOT CHAMBER FOR DIE CASTING APPLICATION [patent_app_type] => utility [patent_app_number] => 18/959363 [patent_app_country] => US [patent_app_date] => 2024-11-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8398 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -7 [patent_words_short_claim] => 244 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18959363 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/959363
Apparatus for extending service life of shot chamber for die casting application Nov 24, 2024 Issued
Array ( [id] => 19861259 [patent_doc_number] => 20250100045 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-03-27 [patent_title] => CONTINUOUS CASTING OF MOLTEN METAL WITH VERTICALLY FLEXIBLE EDGE CONTAINMENT [patent_app_type] => utility [patent_app_number] => 18/888392 [patent_app_country] => US [patent_app_date] => 2024-09-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9454 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 142 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18888392 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/888392
CONTINUOUS CASTING OF MOLTEN METAL WITH VERTICALLY FLEXIBLE EDGE CONTAINMENT Sep 17, 2024 Pending
Array ( [id] => 20584531 [patent_doc_number] => 20260070121 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-03-12 [patent_title] => INFORMATION HANDLING SYSTEM MAGNESIUM HOUSING MANUFACTURE WITH A HOT RUNNER DIE CAST [patent_app_type] => utility [patent_app_number] => 18/830807 [patent_app_country] => US [patent_app_date] => 2024-09-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 0 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 18830807 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/830807
INFORMATION HANDLING SYSTEM MAGNESIUM HOUSING MANUFACTURE WITH A HOT RUNNER DIE CAST Sep 10, 2024 Pending
Array ( [id] => 20023799 [patent_doc_number] => 20250162021 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-05-22 [patent_title] => FLASK REMOVAL UNIT, MODELING MACHINE, AND FLASK REMOVAL METHOD [patent_app_type] => utility [patent_app_number] => 18/829807 [patent_app_country] => US [patent_app_date] => 2024-09-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9630 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -5 [patent_words_short_claim] => 171 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18829807 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/829807
FLASK REMOVAL UNIT, MODELING MACHINE, AND FLASK REMOVAL METHOD Sep 9, 2024 Pending
Array ( [id] => 19831431 [patent_doc_number] => 20250083217 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-03-13 [patent_title] => CORE MOLDING SYSTEM AND METHOD [patent_app_type] => utility [patent_app_number] => 18/824440 [patent_app_country] => US [patent_app_date] => 2024-09-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5750 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 18824440 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/824440
CORE MOLDING SYSTEM AND METHOD Sep 3, 2024 Pending
Array ( [id] => 19641893 [patent_doc_number] => 20240416413 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-12-19 [patent_title] => ADDITIVELY MANUFACTURED CHANNELS FOR MOLD DIE CASTINGS [patent_app_type] => utility [patent_app_number] => 18/817674 [patent_app_country] => US [patent_app_date] => 2024-08-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3118 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 94 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18817674 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/817674
ADDITIVELY MANUFACTURED CHANNELS FOR MOLD DIE CASTINGS Aug 27, 2024 Pending
Array ( [id] => 20196939 [patent_doc_number] => 20250273649 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-08-28 [patent_title] => APPARATUS AND METHOD FOR MANUFACTURING ELECTRODE SUBSTRATE OF SECONDARY BATTERY AND ELECTRODE SUBSTRATE MANUFACTURED BY THE METHOD [patent_app_type] => utility [patent_app_number] => 18/811422 [patent_app_country] => US [patent_app_date] => 2024-08-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5510 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 62 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18811422 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/811422
APPARATUS AND METHOD FOR MANUFACTURING ELECTRODE SUBSTRATE OF SECONDARY BATTERY AND ELECTRODE SUBSTRATE MANUFACTURED BY THE METHOD Aug 20, 2024 Pending
Array ( [id] => 19799474 [patent_doc_number] => 20250065399 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-02-27 [patent_title] => METHOD OF FABRICATING A METAL MATRIX COMPOSITE (MMC) FEEDSTOCK MATERIAL FOR ADDITIVE MANUFACTURING, AND METHOD OF ADDITIVELY MANUFACTURING A MMC COMPONENT [patent_app_type] => utility [patent_app_number] => 18/806970 [patent_app_country] => US [patent_app_date] => 2024-08-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5131 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 94 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18806970 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/806970
METHOD OF FABRICATING A METAL MATRIX COMPOSITE (MMC) FEEDSTOCK MATERIAL FOR ADDITIVE MANUFACTURING, AND METHOD OF ADDITIVELY MANUFACTURING A MMC COMPONENT Aug 15, 2024 Abandoned
Array ( [id] => 19496855 [patent_doc_number] => 20240335873 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-10-10 [patent_title] => CONTINUOUS CASTING PROCESS OF METAL [patent_app_type] => utility [patent_app_number] => 18/748604 [patent_app_country] => US [patent_app_date] => 2024-06-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2075 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 161 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18748604 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/748604
CONTINUOUS CASTING PROCESS OF METAL Jun 19, 2024 Pending
Array ( [id] => 20392249 [patent_doc_number] => 20250367724 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-12-04 [patent_title] => SPREADERS FOR DIE CASTING AND METHODS OF MAKING THE SAME [patent_app_type] => utility [patent_app_number] => 18/740154 [patent_app_country] => US [patent_app_date] => 2024-06-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2282 [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] => 18740154 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/740154
SPREADERS FOR DIE CASTING AND METHODS OF MAKING THE SAME Jun 10, 2024 Pending
Array ( [id] => 19462953 [patent_doc_number] => 20240316622 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-09-26 [patent_title] => CONTINUOUS CASTING PROCESS OF METAL [patent_app_type] => utility [patent_app_number] => 18/736509 [patent_app_country] => US [patent_app_date] => 2024-06-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2075 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 123 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18736509 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/736509
CONTINUOUS CASTING PROCESS OF METAL Jun 5, 2024 Pending
Array ( [id] => 19156626 [patent_doc_number] => 20240149333 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-09 [patent_title] => Continuous caster to cast a metal product [patent_app_type] => utility [patent_app_number] => 18/543940 [patent_app_country] => US [patent_app_date] => 2023-12-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2179 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -5 [patent_words_short_claim] => 116 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18543940 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/543940
Continuous caster to cast a metal product Dec 17, 2023 Issued
Array ( [id] => 19784696 [patent_doc_number] => 20250058375 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-02-20 [patent_title] => Digital Die Casting Machine with Mold Temperature Control [patent_app_type] => utility [patent_app_number] => 18/528665 [patent_app_country] => US [patent_app_date] => 2023-12-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7006 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 307 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18528665 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/528665
Digital Die Casting Machine with Mold Temperature Control Dec 3, 2023 Pending
Array ( [id] => 20039856 [patent_doc_number] => 20250178078 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-06-05 [patent_title] => TEMPERATURE CONTROL APPARATUS AND PROCESS FOR HIGH-FLUX CONTINUOUS CASTING AND ROLLING OF ALUMINUM ALLOY PLATE [patent_app_type] => utility [patent_app_number] => 18/839429 [patent_app_country] => US [patent_app_date] => 2023-10-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 0 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -4 [patent_words_short_claim] => 880 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18839429 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/839429
TEMPERATURE CONTROL APPARATUS AND PROCESS FOR HIGH-FLUX CONTINUOUS CASTING AND ROLLING OF ALUMINUM ALLOY PLATE Oct 29, 2023 Pending
Array ( [id] => 19141186 [patent_doc_number] => 20240139995 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-02 [patent_title] => THREE-DIMENSIONAL PRINTING APPARATUS [patent_app_type] => utility [patent_app_number] => 18/497538 [patent_app_country] => US [patent_app_date] => 2023-10-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 23769 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -52 [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] => 18497538 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/497538
THREE-DIMENSIONAL PRINTING APPARATUS Oct 29, 2023 Pending
Array ( [id] => 19156627 [patent_doc_number] => 20240149334 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-09 [patent_title] => PLUNGER ROD, INJECTION DEVICE, INJECTION METHOD, CONCENTRICITY MEASUREMENT TOOL, AND CONCENTRICITY MEASUREMENT METHOD [patent_app_type] => utility [patent_app_number] => 18/384473 [patent_app_country] => US [patent_app_date] => 2023-10-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7522 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [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] => 18384473 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/384473
PLUNGER ROD, INJECTION DEVICE, INJECTION METHOD, CONCENTRICITY MEASUREMENT TOOL, AND CONCENTRICITY MEASUREMENT METHOD Oct 26, 2023 Pending
Array ( [id] => 18940336 [patent_doc_number] => 20240035475 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-02-01 [patent_title] => MOLD PUMP ENGAGEMENT APPARATUS [patent_app_type] => utility [patent_app_number] => 18/379903 [patent_app_country] => US [patent_app_date] => 2023-10-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3018 [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] => 18379903 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/379903
Mold pump engagement apparatus Oct 12, 2023 Issued
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