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] => 18938671 [patent_doc_number] => 20240033810 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-02-01 [patent_title] => METHODS FOR CASTING A COMPONENT HAVING A READILY REMOVABLE CASTING CORE [patent_app_type] => utility [patent_app_number] => 18/482060 [patent_app_country] => US [patent_app_date] => 2023-10-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8313 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 146 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18482060 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/482060
METHODS FOR CASTING A COMPONENT HAVING A READILY REMOVABLE CASTING CORE Oct 5, 2023 Pending
Array ( [id] => 19116830 [patent_doc_number] => 20240128580 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-04-18 [patent_title] => VEHICLE BATTERY PACK INCLUDING A THERMAL MANAGEMENT ASSEMBLY [patent_app_type] => utility [patent_app_number] => 18/481431 [patent_app_country] => US [patent_app_date] => 2023-10-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5250 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 137 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18481431 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/481431
VEHICLE BATTERY PACK INCLUDING A THERMAL MANAGEMENT ASSEMBLY Oct 4, 2023 Pending
Array ( [id] => 19880043 [patent_doc_number] => 20250112300 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-04-03 [patent_title] => BATTERY WITH PATHWAY [patent_app_type] => utility [patent_app_number] => 18/374412 [patent_app_country] => US [patent_app_date] => 2023-09-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6944 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 69 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18374412 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/374412
BATTERY WITH PATHWAY Sep 27, 2023 Pending
Array ( [id] => 19232696 [patent_doc_number] => 20240189888 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-06-13 [patent_title] => LOST FOAM AND SAND CASTING WITH POLYLACTIC ACID-BASED FOAM ARTICLES [patent_app_type] => utility [patent_app_number] => 18/476909 [patent_app_country] => US [patent_app_date] => 2023-09-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6257 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -22 [patent_words_short_claim] => 85 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18476909 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/476909
Lost foam and sand casting with polylactic acid- based foam articles Sep 27, 2023 Issued
Array ( [id] => 18901835 [patent_doc_number] => 20240017320 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-01-18 [patent_title] => PROCESS FOR EVAPORATIVE CASTING [patent_app_type] => utility [patent_app_number] => 18/475495 [patent_app_country] => US [patent_app_date] => 2023-09-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8231 [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] => 18475495 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/475495
PROCESS FOR EVAPORATIVE CASTING Sep 26, 2023 Abandoned
Array ( [id] => 19066165 [patent_doc_number] => 20240100591 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-03-28 [patent_title] => METHOD AND SYSTEM FOR DIE CASTING [patent_app_type] => utility [patent_app_number] => 18/472643 [patent_app_country] => US [patent_app_date] => 2023-09-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6534 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 18472643 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/472643
METHOD AND SYSTEM FOR DIE CASTING Sep 21, 2023 Pending
Array ( [id] => 19821749 [patent_doc_number] => 20250079956 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-03-06 [patent_title] => METHODS TO REDUCE COLD FLAKES IN HIGH PRESSURE DIE CASTINGS [patent_app_type] => utility [patent_app_number] => 18/467159 [patent_app_country] => US [patent_app_date] => 2023-09-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5520 [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] => 18467159 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/467159
METHODS TO REDUCE COLD FLAKES IN HIGH PRESSURE DIE CASTINGS Sep 13, 2023 Abandoned
Array ( [id] => 19799472 [patent_doc_number] => 20250065397 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-02-27 [patent_title] => APPARATUS FOR THE ENHANCEMENT OF NON-METALLIC PARTICLE REMOVAL FROM LIQUID METAL FLOWING THROUGH A VESSEL [patent_app_type] => utility [patent_app_number] => 18/237144 [patent_app_country] => US [patent_app_date] => 2023-08-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6312 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -21 [patent_words_short_claim] => 146 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18237144 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/237144
APPARATUS FOR THE ENHANCEMENT OF NON-METALLIC PARTICLE REMOVAL FROM LIQUID METAL FLOWING THROUGH A VESSEL Aug 22, 2023 Pending
Array ( [id] => 20518039 [patent_doc_number] => 20260042143 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-02-12 [patent_title] => MOLD RELEASE AGENT ADHESION STATE EVALUATION METHOD, LUBRICANT ADHESION STATE EVALUATION METHOD, AND MOLD RELEASE AGENT ADHESION STATE EVALUATION SYSTEM [patent_app_type] => utility [patent_app_number] => 19/116397 [patent_app_country] => US [patent_app_date] => 2023-08-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2710 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 108 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19116397 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/116397
MOLD RELEASE AGENT ADHESION STATE EVALUATION METHOD, LUBRICANT ADHESION STATE EVALUATION METHOD, AND MOLD RELEASE AGENT ADHESION STATE EVALUATION SYSTEM Aug 8, 2023 Pending
Array ( [id] => 20115338 [patent_doc_number] => 12365024 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-07-22 [patent_title] => Direct casting into droplet printed molds to create low surface finish AM parts [patent_app_type] => utility [patent_app_number] => 18/364315 [patent_app_country] => US [patent_app_date] => 2023-08-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 13 [patent_no_of_words] => 765 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 234 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18364315 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/364315
Direct casting into droplet printed molds to create low surface finish AM parts Aug 1, 2023 Issued
Array ( [id] => 19071495 [patent_doc_number] => 20240105921 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-03-28 [patent_title] => METHOD FOR PREPARING AN ELECTRODE MATERIAL AND ELECTROCHEMICAL USE THE SAME [patent_app_type] => utility [patent_app_number] => 18/362242 [patent_app_country] => US [patent_app_date] => 2023-07-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8790 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -33 [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] => 18362242 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/362242
METHOD FOR PREPARING AN ELECTRODE MATERIAL AND ELECTROCHEMICAL USE THE SAME Jul 30, 2023 Pending
Array ( [id] => 18774768 [patent_doc_number] => 20230369599 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-11-16 [patent_title] => BORIC ACID DERIVATIVE MODIFIED BINDER AND LITHIUM-ION BATTERY INCLUDING SAME [patent_app_type] => utility [patent_app_number] => 18/225642 [patent_app_country] => US [patent_app_date] => 2023-07-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6248 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 46 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18225642 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/225642
BORIC ACID DERIVATIVE MODIFIED BINDER AND LITHIUM-ION BATTERY INCLUDING SAME Jul 23, 2023 Pending
Array ( [id] => 18753006 [patent_doc_number] => 20230356292 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-11-09 [patent_title] => Water-Soluble Silicone-Based Release Agent [patent_app_type] => utility [patent_app_number] => 18/354146 [patent_app_country] => US [patent_app_date] => 2023-07-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3119 [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] => 18354146 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/354146
Water-Soluble Silicone-Based Release Agent Jul 17, 2023 Pending
Array ( [id] => 19055193 [patent_doc_number] => 20240097162 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-03-21 [patent_title] => FUEL CELL SYSTEM [patent_app_type] => utility [patent_app_number] => 18/345174 [patent_app_country] => US [patent_app_date] => 2023-06-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8802 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 56 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18345174 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/345174
FUEL CELL SYSTEM Jun 29, 2023 Pending
Array ( [id] => 18740996 [patent_doc_number] => 20230349976 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-11-02 [patent_title] => SAMPLING STRUCTURE, BATTERY PACK, AND ELECTRIC VEHICLE [patent_app_type] => utility [patent_app_number] => 18/345249 [patent_app_country] => US [patent_app_date] => 2023-06-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3711 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 80 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18345249 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/345249
SAMPLING STRUCTURE, BATTERY PACK, AND ELECTRIC VEHICLE Jun 29, 2023 Pending
Array ( [id] => 18713180 [patent_doc_number] => 20230335816 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-10-19 [patent_title] => METHOD FOR SAFE RECOVERY OF A WASTE ANODE PIECE OF A LITHIUM ION BATTERY AND APPLICATION THEREOF [patent_app_type] => utility [patent_app_number] => 18/212178 [patent_app_country] => US [patent_app_date] => 2023-06-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4506 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 178 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18212178 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/212178
METHOD FOR SAFE RECOVERY OF A WASTE ANODE PIECE OF A LITHIUM ION BATTERY AND APPLICATION THEREOF Jun 19, 2023 Pending
Array ( [id] => 18708155 [patent_doc_number] => 20230330740 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-10-19 [patent_title] => METHOD TO PRODUCE A METAL STRIP, AND PRODUCTION PLANT IMPLEMENTING SAID METHOD [patent_app_type] => utility [patent_app_number] => 18/337923 [patent_app_country] => US [patent_app_date] => 2023-06-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9726 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 271 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18337923 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/337923
METHOD TO PRODUCE A METAL STRIP, AND PRODUCTION PLANT IMPLEMENTING SAID METHOD Jun 19, 2023 Abandoned
Array ( [id] => 19191857 [patent_doc_number] => 20240170770 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-23 [patent_title] => LITHIUM-AIR BATTERY-BASED POWER SUPPLY APPARATUS AND CONTROL METHOD THEREOF [patent_app_type] => utility [patent_app_number] => 18/206988 [patent_app_country] => US [patent_app_date] => 2023-06-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7505 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 153 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18206988 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/206988
LITHIUM-AIR BATTERY-BASED POWER SUPPLY APPARATUS AND CONTROL METHOD THEREOF Jun 6, 2023 Pending
Array ( [id] => 20402488 [patent_doc_number] => 12492459 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-12-09 [patent_title] => Preparation method for heterogeneous Mg alloys bar with high elastic modulus [patent_app_type] => utility [patent_app_number] => 18/327073 [patent_app_country] => US [patent_app_date] => 2023-06-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 5 [patent_no_of_words] => 0 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 392 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18327073 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/327073
Preparation method for heterogeneous Mg alloys bar with high elastic modulus May 31, 2023 Issued
Array ( [id] => 18661699 [patent_doc_number] => 20230307715 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-09-28 [patent_title] => SOLID-STATE BATTERY, SOLID-STATE BATTERY MANUFACTURING METHOD, AND SOLID-STATE BATTERY MONITORING METHOD [patent_app_type] => utility [patent_app_number] => 18/198325 [patent_app_country] => US [patent_app_date] => 2023-05-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10807 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -4 [patent_words_short_claim] => 75 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18198325 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/198325
SOLID-STATE BATTERY, SOLID-STATE BATTERY MANUFACTURING METHOD, AND SOLID-STATE BATTERY MONITORING METHOD May 16, 2023 Pending
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