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] => 20136787 [patent_doc_number] => 20250243831 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-07-31 [patent_title] => FUEL DELIVERY SYSTEM AND METHOD FOR SPARK IGNITED ENGINES OF WORK VEHICLES [patent_app_type] => utility [patent_app_number] => 18/958273 [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] => 12480 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 198 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18958273 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/958273
FUEL DELIVERY SYSTEM AND METHOD FOR SPARK IGNITED ENGINES OF WORK VEHICLES Nov 24, 2024 Pending
Array ( [id] => 19833017 [patent_doc_number] => 20250084803 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-03-13 [patent_title] => ENGINE CONTROL UNIT CALIBRATION [patent_app_type] => utility [patent_app_number] => 18/956791 [patent_app_country] => US [patent_app_date] => 2024-11-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 12896 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 304 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18956791 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/956791
ENGINE CONTROL UNIT CALIBRATION Nov 21, 2024 Pending
Array ( [id] => 19836342 [patent_doc_number] => 20250088128 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-03-13 [patent_title] => SYSTEMS AND METHODS FOR GENSET COOLANT CONTROL [patent_app_type] => utility [patent_app_number] => 18/950861 [patent_app_country] => US [patent_app_date] => 2024-11-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 14441 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 88 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18950861 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/950861
SYSTEMS AND METHODS FOR GENSET COOLANT CONTROL Nov 17, 2024 Pending
Array ( [id] => 20008210 [patent_doc_number] => 20250146432 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-05-08 [patent_title] => AIR-FLUID SEPARATOR [patent_app_type] => utility [patent_app_number] => 18/939957 [patent_app_country] => US [patent_app_date] => 2024-11-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1296 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -33 [patent_words_short_claim] => 122 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18939957 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/939957
AIR-FLUID SEPARATOR Nov 6, 2024 Pending
Array ( [id] => 20050663 [patent_doc_number] => 20250188885 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-06-12 [patent_title] => CONTROLLER FOR INTERNAL COMBUSTION ENGINE [patent_app_type] => utility [patent_app_number] => 18/939519 [patent_app_country] => US [patent_app_date] => 2024-11-07 [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] => 134 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18939519 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/939519
Controller for internal combustion engine Nov 6, 2024 Issued
Array ( [id] => 20085883 [patent_doc_number] => 20250215819 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-07-03 [patent_title] => WATER JACKET SPACER STRUCTURE [patent_app_type] => utility [patent_app_number] => 18/931773 [patent_app_country] => US [patent_app_date] => 2024-10-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7696 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 229 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18931773 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/931773
WATER JACKET SPACER STRUCTURE Oct 29, 2024 Pending
Array ( [id] => 20085900 [patent_doc_number] => 20250215836 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-07-03 [patent_title] => CONTROLLER FOR INTERNAL COMBUSTION ENGINE [patent_app_type] => utility [patent_app_number] => 18/929651 [patent_app_country] => US [patent_app_date] => 2024-10-29 [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] => 173 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18929651 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/929651
CONTROLLER FOR INTERNAL COMBUSTION ENGINE Oct 28, 2024 Pending
Array ( [id] => 19991536 [patent_doc_number] => 20250129758 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-04-24 [patent_title] => ENGINE APPARATUS [patent_app_type] => utility [patent_app_number] => 18/920439 [patent_app_country] => US [patent_app_date] => 2024-10-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1122 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [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] => 18920439 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/920439
ENGINE APPARATUS Oct 17, 2024 Pending
Array ( [id] => 19746464 [patent_doc_number] => 20250035029 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-01-30 [patent_title] => THERMAL MANAGEMENT SYSTEM AND VEHICLE HAVING SAME [patent_app_type] => utility [patent_app_number] => 18/912409 [patent_app_country] => US [patent_app_date] => 2024-10-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6385 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [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] => 18912409 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/912409
THERMAL MANAGEMENT SYSTEM AND VEHICLE HAVING SAME Oct 9, 2024 Pending
Array ( [id] => 20136754 [patent_doc_number] => 20250243798 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-07-31 [patent_title] => HEAT MANAGEMENT DEVICE FOR VEHICLE [patent_app_type] => utility [patent_app_number] => 18/903169 [patent_app_country] => US [patent_app_date] => 2024-10-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1238 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -4 [patent_words_short_claim] => 205 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18903169 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/903169
HEAT MANAGEMENT DEVICE FOR VEHICLE Sep 30, 2024 Pending
Array ( [id] => 19863150 [patent_doc_number] => 20250101936 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-03-27 [patent_title] => FUEL FITTING [patent_app_type] => utility [patent_app_number] => 18/896175 [patent_app_country] => US [patent_app_date] => 2024-09-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5459 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [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] => 18896175 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/896175
FUEL FITTING Sep 24, 2024 Pending
Array ( [id] => 20302950 [patent_doc_number] => 12448933 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-10-21 [patent_title] => Systems and methods for intelligent diagnostic screening of hybrid generator systems [patent_app_type] => utility [patent_app_number] => 18/884512 [patent_app_country] => US [patent_app_date] => 2024-09-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 16 [patent_no_of_words] => 6041 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 321 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18884512 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/884512
Systems and methods for intelligent diagnostic screening of hybrid generator systems Sep 12, 2024 Issued
Array ( [id] => 20016702 [patent_doc_number] => 20250154924 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-05-15 [patent_title] => DEVICE FOR ENHANCING COMBUSTION EFFICIENCY OF COMBUSTION UNIT [patent_app_type] => utility [patent_app_number] => 18/830996 [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] => -9 [patent_words_short_claim] => 106 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18830996 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/830996
DEVICE FOR ENHANCING COMBUSTION EFFICIENCY OF COMBUSTION UNIT Sep 10, 2024 Issued
Array ( [id] => 20241602 [patent_doc_number] => 12421911 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-09-23 [patent_title] => Controller for internal combustion engine and method for controlling internal combustion engine [patent_app_type] => utility [patent_app_number] => 18/827947 [patent_app_country] => US [patent_app_date] => 2024-09-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 5 [patent_no_of_words] => 0 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 2 [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] => 18827947 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/827947
Controller for internal combustion engine and method for controlling internal combustion engine Sep 8, 2024 Issued
Array ( [id] => 19984601 [patent_doc_number] => 20250122823 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-04-17 [patent_title] => THERMAL MANAGEMENT SYSTEM [patent_app_type] => utility [patent_app_number] => 18/827955 [patent_app_country] => US [patent_app_date] => 2024-09-09 [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] => 164 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18827955 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/827955
THERMAL MANAGEMENT SYSTEM Sep 8, 2024 Pending
Array ( [id] => 19847486 [patent_doc_number] => 20250092837 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-03-20 [patent_title] => ELECTRONIC THROTTLE CONTROL OF SNOWMOBILE WITH TWO-STROKE INTERNAL-COMBUSTION ENGINE [patent_app_type] => utility [patent_app_number] => 18/825014 [patent_app_country] => US [patent_app_date] => 2024-09-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13500 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 193 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18825014 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/825014
ELECTRONIC THROTTLE CONTROL OF SNOWMOBILE WITH TWO-STROKE INTERNAL-COMBUSTION ENGINE Sep 4, 2024 Pending
Array ( [id] => 19833018 [patent_doc_number] => 20250084804 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-03-13 [patent_title] => INJECTION CONTROL APPARATUS [patent_app_type] => utility [patent_app_number] => 18/823917 [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] => 9528 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -7 [patent_words_short_claim] => 254 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18823917 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/823917
Injection control apparatus Sep 3, 2024 Issued
Array ( [id] => 20202051 [patent_doc_number] => 12404825 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-09-02 [patent_title] => Blow-by gas recirculation device [patent_app_type] => utility [patent_app_number] => 18/819227 [patent_app_country] => US [patent_app_date] => 2024-08-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 0 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 241 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18819227 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/819227
Blow-by gas recirculation device Aug 28, 2024 Issued
Array ( [id] => 19817447 [patent_doc_number] => 20250075654 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-03-06 [patent_title] => INTERNAL COMBUSTION ENGINE WITH COMBUSTION PRE-CHAMBER [patent_app_type] => utility [patent_app_number] => 18/819482 [patent_app_country] => US [patent_app_date] => 2024-08-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5881 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 302 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18819482 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/819482
INTERNAL COMBUSTION ENGINE WITH COMBUSTION PRE-CHAMBER Aug 28, 2024 Pending
Array ( [id] => 19543774 [patent_doc_number] => 20240360810 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-10-31 [patent_title] => VEHICLE DRIVING DEVICE [patent_app_type] => utility [patent_app_number] => 18/765492 [patent_app_country] => US [patent_app_date] => 2024-07-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7868 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 257 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18765492 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/765492
Vehicle driving device Jul 7, 2024 Issued
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