Search

David Y. Eng

Examiner (ID: 10898)

Most Active Art Unit
2302
Art Unit(s)
2455, 2315, 2307, 2783, 2302, 2155, 2784
Total Applications
1574
Issued Applications
1203
Pending Applications
58
Abandoned Applications
313

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 20423232 [patent_doc_number] => 20250385317 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-12-18 [patent_title] => SECONDARY BATTERY AND ELECTRIC DEVICE [patent_app_type] => utility [patent_app_number] => 19/302993 [patent_app_country] => US [patent_app_date] => 2025-08-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6735 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 114 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19302993 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/302993
SECONDARY BATTERY AND ELECTRIC DEVICE Aug 17, 2025 Pending
Array ( [id] => 20630645 [patent_doc_number] => 20260094934 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-04-02 [patent_title] => SINGLE-ION ELECTROLYTES FOR SOLID-STATE ALKALINE BATTERIES [patent_app_type] => utility [patent_app_number] => 19/296208 [patent_app_country] => US [patent_app_date] => 2025-08-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3283 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 28 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19296208 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/296208
Single-ion electrolytes for solid-state alkaline batteries Aug 10, 2025 Issued
Array ( [id] => 20382039 [patent_doc_number] => 20250364532 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-11-27 [patent_title] => NEGATIVE ELECTRODE PLATE, SECONDARY BATTERY, AND ELECTRIC APPARATUS [patent_app_type] => utility [patent_app_number] => 19/295868 [patent_app_country] => US [patent_app_date] => 2025-08-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4917 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [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] => 19295868 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/295868
NEGATIVE ELECTRODE PLATE, SECONDARY BATTERY, AND ELECTRIC APPARATUS Aug 10, 2025 Pending
Array ( [id] => 19781759 [patent_doc_number] => 12230799 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2025-02-18 [patent_title] => Carbon nanotube sodiophilic metal anode-free sodium metal battery electrode material, preparation method therefor and application thereof [patent_app_type] => utility [patent_app_number] => 18/816719 [patent_app_country] => US [patent_app_date] => 2024-08-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 10 [patent_no_of_words] => 6701 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 81 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18816719 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/816719
Carbon nanotube sodiophilic metal anode-free sodium metal battery electrode material, preparation method therefor and application thereof Aug 26, 2024 Issued
Array ( [id] => 19407605 [patent_doc_number] => 20240291116 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-29 [patent_title] => Battery Module [patent_app_type] => utility [patent_app_number] => 18/660664 [patent_app_country] => US [patent_app_date] => 2024-05-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9381 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -4 [patent_words_short_claim] => 141 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18660664 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/660664
Battery Module May 9, 2024 Pending
Array ( [id] => 20305493 [patent_doc_number] => 12451495 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-10-21 [patent_title] => Highly active, robust and versatile multifunctional, fully non-noble metals based electro-catalyst compositions and methods of making for energy conversion and storage [patent_app_type] => utility [patent_app_number] => 18/654149 [patent_app_country] => US [patent_app_date] => 2024-05-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 12 [patent_no_of_words] => 4933 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 199 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18654149 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/654149
Highly active, robust and versatile multifunctional, fully non-noble metals based electro-catalyst compositions and methods of making for energy conversion and storage May 2, 2024 Issued
Array ( [id] => 20495313 [patent_doc_number] => 12537190 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-01-27 [patent_title] => Electrodes, lithium-ion batteries, and methods of making and using same [patent_app_type] => utility [patent_app_number] => 18/638486 [patent_app_country] => US [patent_app_date] => 2024-04-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 23 [patent_no_of_words] => 8356 [patent_no_of_claims] => 29 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 137 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18638486 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/638486
Electrodes, lithium-ion batteries, and methods of making and using same Apr 16, 2024 Issued
Array ( [id] => 19335881 [patent_doc_number] => 20240250311 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-07-25 [patent_title] => ELECTROCHEMICAL DEVICE [patent_app_type] => utility [patent_app_number] => 18/627672 [patent_app_country] => US [patent_app_date] => 2024-04-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7531 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -24 [patent_words_short_claim] => 221 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18627672 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/627672
ELECTROCHEMICAL DEVICE Apr 4, 2024 Pending
Array ( [id] => 19773583 [patent_doc_number] => 20250055009 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-02-13 [patent_title] => STABLE HIGH CONDUCTIVITY OXIDE ELECTROLYTE [patent_app_type] => utility [patent_app_number] => 18/623682 [patent_app_country] => US [patent_app_date] => 2024-04-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4663 [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] => 18623682 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/623682
STABLE HIGH CONDUCTIVITY OXIDE ELECTROLYTE Mar 31, 2024 Pending
Array ( [id] => 19335878 [patent_doc_number] => 20240250308 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-07-25 [patent_title] => ALL SOLID STATE BATTERY [patent_app_type] => utility [patent_app_number] => 18/583991 [patent_app_country] => US [patent_app_date] => 2024-02-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6859 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -7 [patent_words_short_claim] => 159 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18583991 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/583991
ALL SOLID STATE BATTERY Feb 21, 2024 Pending
Array ( [id] => 19161435 [patent_doc_number] => 20240154142 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-09 [patent_title] => CARBON DIOXIDE PRODUCTION FROM CARBONATE FUEL CELLS [patent_app_type] => utility [patent_app_number] => 18/417088 [patent_app_country] => US [patent_app_date] => 2024-01-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6581 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [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] => 18417088 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/417088
Carbon dioxide production from carbonate fuel cells Jan 18, 2024 Issued
Array ( [id] => 20456122 [patent_doc_number] => 12519185 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-01-06 [patent_title] => Carbon adhered graphite tabs for battery terminal fastening [patent_app_type] => utility [patent_app_number] => 18/405610 [patent_app_country] => US [patent_app_date] => 2024-01-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 5 [patent_no_of_words] => 0 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 55 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18405610 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/405610
Carbon adhered graphite tabs for battery terminal fastening Jan 4, 2024 Issued
Array ( [id] => 19176487 [patent_doc_number] => 20240162461 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-16 [patent_title] => FUEL CELL SYSTEM [patent_app_type] => utility [patent_app_number] => 18/388320 [patent_app_country] => US [patent_app_date] => 2023-11-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7207 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [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] => 18388320 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/388320
FUEL CELL SYSTEM Nov 8, 2023 Abandoned
Array ( [id] => 19171317 [patent_doc_number] => 20240157291 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-16 [patent_title] => CO2 Filtration Battery Blanket [patent_app_type] => utility [patent_app_number] => 18/503921 [patent_app_country] => US [patent_app_date] => 2023-11-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1279 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 38 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18503921 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/503921
CO2 Filtration Battery Blanket Nov 6, 2023 Pending
Array ( [id] => 18991409 [patent_doc_number] => 20240063378 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-02-22 [patent_title] => ELECTRODE MATERIAL AND BATTERY [patent_app_type] => utility [patent_app_number] => 18/500514 [patent_app_country] => US [patent_app_date] => 2023-11-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9500 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 26 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18500514 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/500514
ELECTRODE MATERIAL AND BATTERY Nov 1, 2023 Pending
Array ( [id] => 19237719 [patent_doc_number] => 20240194914 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-06-13 [patent_title] => METHOD FOR USING FUEL CELL SYSTEM AIR THROTTLE TO CONTROL HYBRID POWER SYSTEM [patent_app_type] => utility [patent_app_number] => 18/386582 [patent_app_country] => US [patent_app_date] => 2023-11-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6417 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 70 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18386582 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/386582
Method for using fuel cell system air throttle to control hybrid power system Nov 1, 2023 Issued
Array ( [id] => 20161517 [patent_doc_number] => 12388155 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-08-12 [patent_title] => Separators for enhanced flooded batteries, batteries, and related methods [patent_app_type] => utility [patent_app_number] => 18/385817 [patent_app_country] => US [patent_app_date] => 2023-10-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 38 [patent_figures_cnt] => 66 [patent_no_of_words] => 11614 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 157 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18385817 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/385817
Separators for enhanced flooded batteries, batteries, and related methods Oct 30, 2023 Issued
Array ( [id] => 18975562 [patent_doc_number] => 20240055654 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-02-15 [patent_title] => SOLID ELECTROLYTE MATERIAL AND BATTERY [patent_app_type] => utility [patent_app_number] => 18/494705 [patent_app_country] => US [patent_app_date] => 2023-10-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11368 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -7 [patent_words_short_claim] => 66 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18494705 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/494705
SOLID ELECTROLYTE MATERIAL AND BATTERY Oct 24, 2023 Pending
Array ( [id] => 19468568 [patent_doc_number] => 20240322238 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-09-26 [patent_title] => ELECTROLYTE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME [patent_app_type] => utility [patent_app_number] => 18/494645 [patent_app_country] => US [patent_app_date] => 2023-10-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10944 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 124 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18494645 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/494645
ELECTROLYTE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME Oct 24, 2023 Pending
Array ( [id] => 20161499 [patent_doc_number] => 12388136 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-08-12 [patent_title] => Cylindrical secondary battery [patent_app_type] => utility [patent_app_number] => 18/485692 [patent_app_country] => US [patent_app_date] => 2023-10-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 7 [patent_no_of_words] => 2516 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 315 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18485692 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/485692
Cylindrical secondary battery Oct 11, 2023 Issued
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