Search

David J. Walczak

Examiner (ID: 16217, Phone: (571)272-4895 , Office: P/3754 )

Most Active Art Unit
3754
Art Unit(s)
2403, 3751, 2899, 3105, 3754, 2832
Total Applications
4701
Issued Applications
3668
Pending Applications
254
Abandoned Applications
823

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 19060864 [patent_doc_number] => 11940085 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-03-26 [patent_title] => Cover structure [patent_app_type] => utility [patent_app_number] => 17/669312 [patent_app_country] => US [patent_app_date] => 2022-02-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 10 [patent_no_of_words] => 10660 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 165 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17669312 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/669312
Cover structure Feb 9, 2022 Issued
Array ( [id] => 17808361 [patent_doc_number] => 20220260196 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-08-18 [patent_title] => COVER STRUCTURE [patent_app_type] => utility [patent_app_number] => 17/669305 [patent_app_country] => US [patent_app_date] => 2022-02-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7195 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -4 [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] => 17669305 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/669305
Cover structure Feb 9, 2022 Issued
Array ( [id] => 18536851 [patent_doc_number] => 20230241943 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-08-03 [patent_title] => AUXILIARY ENGINE ELECTRIC CAR HEATING SYSTEM [patent_app_type] => utility [patent_app_number] => 17/591624 [patent_app_country] => US [patent_app_date] => 2022-02-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2747 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 45 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17591624 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/591624
AUXILIARY ENGINE ELECTRIC CAR HEATING SYSTEM Feb 2, 2022 Pending
Array ( [id] => 19051681 [patent_doc_number] => 20240093650 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-03-21 [patent_title] => GO-KART WITH INTERNAL COMBUSTION ENGINE WITH ADJUSTABLE POWER [patent_app_type] => utility [patent_app_number] => 18/263243 [patent_app_country] => US [patent_app_date] => 2022-01-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8103 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [patent_words_short_claim] => 188 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18263243 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/263243
Go-kart with internal combustion engine with adjustable power Jan 30, 2022 Issued
Array ( [id] => 18530650 [patent_doc_number] => 20230235720 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-07-27 [patent_title] => VEHICLE ENGINE HEATER [patent_app_type] => utility [patent_app_number] => 17/580740 [patent_app_country] => US [patent_app_date] => 2022-01-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1955 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 72 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17580740 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/580740
VEHICLE ENGINE HEATER Jan 20, 2022 Abandoned
Array ( [id] => 17749149 [patent_doc_number] => 20220227352 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-07-21 [patent_title] => VEHICLE [patent_app_type] => utility [patent_app_number] => 17/576508 [patent_app_country] => US [patent_app_date] => 2022-01-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9777 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -5 [patent_words_short_claim] => 316 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17576508 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/576508
Vehicle Jan 13, 2022 Issued
Array ( [id] => 19738820 [patent_doc_number] => 12215645 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-02-04 [patent_title] => Real-time determination of a fresh-air mass in a cylinder [patent_app_type] => utility [patent_app_number] => 18/269485 [patent_app_country] => US [patent_app_date] => 2022-01-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 13 [patent_no_of_words] => 8458 [patent_no_of_claims] => 16 [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] => 18269485 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/269485
Real-time determination of a fresh-air mass in a cylinder Jan 11, 2022 Issued
Array ( [id] => 19969086 [patent_doc_number] => 12337675 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-06-24 [patent_title] => Method for dissipating heat from vehicle, storage medium and vehicle [patent_app_type] => utility [patent_app_number] => 18/011685 [patent_app_country] => US [patent_app_date] => 2021-12-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 5 [patent_no_of_words] => 1817 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 172 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18011685 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/011685
Method for dissipating heat from vehicle, storage medium and vehicle Dec 30, 2021 Issued
Array ( [id] => 18029494 [patent_doc_number] => 11512671 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2022-11-29 [patent_title] => Hydrogen oxygen generator for vehicles [patent_app_type] => utility [patent_app_number] => 17/562636 [patent_app_country] => US [patent_app_date] => 2021-12-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 5 [patent_no_of_words] => 1083 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 188 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17562636 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/562636
Hydrogen oxygen generator for vehicles Dec 26, 2021 Issued
Array ( [id] => 18078158 [patent_doc_number] => 20220403770 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-12-22 [patent_title] => COOLANT SUPPLYING MODULE [patent_app_type] => utility [patent_app_number] => 17/544097 [patent_app_country] => US [patent_app_date] => 2021-12-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3607 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [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] => 17544097 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/544097
Coolant supplying module Dec 6, 2021 Issued
Array ( [id] => 18895966 [patent_doc_number] => 20240011451 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-01-11 [patent_title] => PISTON, BLOCK ASSEMBLY, AND METHOD FOR COOLING [patent_app_type] => utility [patent_app_number] => 18/265154 [patent_app_country] => US [patent_app_date] => 2021-12-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5663 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 18265154 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/265154
Piston, block assembly, and method for cooling Dec 2, 2021 Issued
Array ( [id] => 17612375 [patent_doc_number] => 20220154654 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-05-19 [patent_title] => METHOD FOR CONTROLLING INJECTION IN A COMBUSTION ENGINE [patent_app_type] => utility [patent_app_number] => 17/454305 [patent_app_country] => US [patent_app_date] => 2021-11-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7738 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 96 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17454305 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/454305
Method for controlling injection in a combustion engine Nov 9, 2021 Issued
Array ( [id] => 17976102 [patent_doc_number] => 11492953 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2022-11-08 [patent_title] => Heat exchanger with coolant manifold [patent_app_type] => utility [patent_app_number] => 17/522438 [patent_app_country] => US [patent_app_date] => 2021-11-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 4101 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 115 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17522438 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/522438
Heat exchanger with coolant manifold Nov 8, 2021 Issued
Array ( [id] => 17579621 [patent_doc_number] => 20220136476 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-05-05 [patent_title] => SELF-CONTAINED ENGINE BLOCK HEATER POWER SUPPLY [patent_app_type] => utility [patent_app_number] => 17/514185 [patent_app_country] => US [patent_app_date] => 2021-10-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9715 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [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] => 17514185 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/514185
Self-contained engine block heater power supply Oct 28, 2021 Issued
Array ( [id] => 20060150 [patent_doc_number] => 20250198372 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-06-19 [patent_title] => SYSTEM AND METHOD FOR MANAGING THE TEMPERATURE OF INJECTED FUEL IN INTERNAL COMBUSTION ENGINES FROM A MIXTURE OF AIR FLOW AND FUEL APPLICABLE TO A VEHICLE [patent_app_type] => utility [patent_app_number] => 18/254973 [patent_app_country] => US [patent_app_date] => 2021-10-20 [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] => -7 [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] => 18254973 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/254973
SYSTEM AND METHOD FOR MANAGING THE TEMPERATURE OF INJECTED FUEL IN INTERNAL COMBUSTION ENGINES FROM A MIXTURE OF AIR FLOW AND FUEL APPLICABLE TO A VEHICLE Oct 19, 2021 Pending
Array ( [id] => 17976150 [patent_doc_number] => 11493001 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2022-11-08 [patent_title] => Onboard refueling vapor recovery for heavy duty applications [patent_app_type] => utility [patent_app_number] => 17/449219 [patent_app_country] => US [patent_app_date] => 2021-09-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 11 [patent_no_of_words] => 19193 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 42 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17449219 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/449219
Onboard refueling vapor recovery for heavy duty applications Sep 27, 2021 Issued
Array ( [id] => 18413698 [patent_doc_number] => 11668233 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-06-06 [patent_title] => Backplate for engine-alternator coupling in standby generator [patent_app_type] => utility [patent_app_number] => 17/448245 [patent_app_country] => US [patent_app_date] => 2021-09-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 11 [patent_no_of_words] => 6491 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 126 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17448245 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/448245
Backplate for engine-alternator coupling in standby generator Sep 20, 2021 Issued
Array ( [id] => 18845424 [patent_doc_number] => 20230407828 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-12-21 [patent_title] => FUEL PUMP [patent_app_type] => utility [patent_app_number] => 18/035384 [patent_app_country] => US [patent_app_date] => 2021-08-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9007 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -6 [patent_words_short_claim] => 105 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18035384 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/035384
Fuel pump Aug 29, 2021 Issued
Array ( [id] => 18399719 [patent_doc_number] => 11661848 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-05-30 [patent_title] => Four piston scotch yoke actuator [patent_app_type] => utility [patent_app_number] => 17/460224 [patent_app_country] => US [patent_app_date] => 2021-08-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 23 [patent_no_of_words] => 3175 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 182 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17460224 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/460224
Four piston scotch yoke actuator Aug 28, 2021 Issued
Array ( [id] => 17474567 [patent_doc_number] => 20220082071 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-03-17 [patent_title] => FUEL SYSTEM FOR AN INTERNAL COMBUSTION ENGINE [patent_app_type] => utility [patent_app_number] => 17/405166 [patent_app_country] => US [patent_app_date] => 2021-08-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2969 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -7 [patent_words_short_claim] => 162 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17405166 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/405166
Fuel system for an internal combustion engine Aug 17, 2021 Issued
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