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] => 17845431 [patent_doc_number] => 11434790 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2022-09-06 [patent_title] => Valve cover load deflection limiting system [patent_app_type] => utility [patent_app_number] => 17/216575 [patent_app_country] => US [patent_app_date] => 2021-03-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 4558 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 78 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17216575 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/216575
Valve cover load deflection limiting system Mar 28, 2021 Issued
Array ( [id] => 17127003 [patent_doc_number] => 20210301772 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-09-30 [patent_title] => STRADDLE-TYPE VEHICLE [patent_app_type] => utility [patent_app_number] => 17/213315 [patent_app_country] => US [patent_app_date] => 2021-03-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7604 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [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] => 17213315 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/213315
Straddle-type vehicle Mar 25, 2021 Issued
Array ( [id] => 17215208 [patent_doc_number] => 20210348546 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-11-11 [patent_title] => SPARK-IGNITION INTERNAL COMBUSTION ENGINE [patent_app_type] => utility [patent_app_number] => 17/209228 [patent_app_country] => US [patent_app_date] => 2021-03-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4011 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -4 [patent_words_short_claim] => 166 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17209228 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/209228
SPARK-IGNITION INTERNAL COMBUSTION ENGINE Mar 22, 2021 Abandoned
Array ( [id] => 18029499 [patent_doc_number] => 11512676 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-11-29 [patent_title] => Detection apparatus and control apparatus [patent_app_type] => utility [patent_app_number] => 17/209511 [patent_app_country] => US [patent_app_date] => 2021-03-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 4726 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 206 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17209511 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/209511
Detection apparatus and control apparatus Mar 22, 2021 Issued
Array ( [id] => 18153602 [patent_doc_number] => 11566568 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-01-31 [patent_title] => Valve timing modulation for EGR balancing [patent_app_type] => utility [patent_app_number] => 17/207292 [patent_app_country] => US [patent_app_date] => 2021-03-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 11491 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 76 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17207292 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/207292
Valve timing modulation for EGR balancing Mar 18, 2021 Issued
Array ( [id] => 19106729 [patent_doc_number] => 11959820 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-04-16 [patent_title] => Pulser plate balancing [patent_app_type] => utility [patent_app_number] => 17/204230 [patent_app_country] => US [patent_app_date] => 2021-03-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 6398 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 120 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17204230 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/204230
Pulser plate balancing Mar 16, 2021 Issued
Array ( [id] => 17111045 [patent_doc_number] => 20210291642 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-09-23 [patent_title] => REPOWERING SYSTEM FOR VEHICLES AND VESSELS [patent_app_type] => utility [patent_app_number] => 17/203514 [patent_app_country] => US [patent_app_date] => 2021-03-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7784 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [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] => 17203514 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/203514
Repowering system for vehicles and vessels Mar 15, 2021 Issued
Array ( [id] => 19504546 [patent_doc_number] => 12115953 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-10-15 [patent_title] => High-pressure thermal fluid brake and engine energy recovery system [patent_app_type] => utility [patent_app_number] => 17/919168 [patent_app_country] => US [patent_app_date] => 2021-03-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 9 [patent_no_of_words] => 5613 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 257 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17919168 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/919168
High-pressure thermal fluid brake and engine energy recovery system Mar 14, 2021 Issued
Array ( [id] => 18794452 [patent_doc_number] => 11828213 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-11-28 [patent_title] => Separation assembly with multiple separators and a single jet pump assembly [patent_app_type] => utility [patent_app_number] => 17/802300 [patent_app_country] => US [patent_app_date] => 2021-02-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 18 [patent_no_of_words] => 9829 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 102 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17802300 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/802300
Separation assembly with multiple separators and a single jet pump assembly Feb 24, 2021 Issued
Array ( [id] => 17330482 [patent_doc_number] => 11220936 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2022-01-11 [patent_title] => Methods and systems for diagnosing a clogged crankcase and for performing a crankcase clean out [patent_app_type] => utility [patent_app_number] => 17/183248 [patent_app_country] => US [patent_app_date] => 2021-02-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 15192 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 75 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17183248 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/183248
Methods and systems for diagnosing a clogged crankcase and for performing a crankcase clean out Feb 22, 2021 Issued
Array ( [id] => 17185855 [patent_doc_number] => 20210332740 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-10-28 [patent_title] => COOLING SYSTEM [patent_app_type] => utility [patent_app_number] => 17/179412 [patent_app_country] => US [patent_app_date] => 2021-02-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7057 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -6 [patent_words_short_claim] => 196 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17179412 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/179412
Cooling system Feb 18, 2021 Issued
Array ( [id] => 17363949 [patent_doc_number] => 11230967 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-01-25 [patent_title] => Internal combustion engine [patent_app_type] => utility [patent_app_number] => 17/178405 [patent_app_country] => US [patent_app_date] => 2021-02-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 2296 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 198 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17178405 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/178405
Internal combustion engine Feb 17, 2021 Issued
Array ( [id] => 18184910 [patent_doc_number] => 20230045640 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-02-09 [patent_title] => FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINES [patent_app_type] => utility [patent_app_number] => 17/793924 [patent_app_country] => US [patent_app_date] => 2021-02-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 16559 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -31 [patent_words_short_claim] => 428 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17793924 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/793924
Fuel injection valve for internal combustion engines Feb 15, 2021 Issued
Array ( [id] => 19939182 [patent_doc_number] => 12311297 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-05-27 [patent_title] => Impactor/separator element and devices comprising an impactor separator/element of this type [patent_app_type] => utility [patent_app_number] => 17/799405 [patent_app_country] => US [patent_app_date] => 2021-02-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 19 [patent_no_of_words] => 1114 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 134 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17799405 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/799405
Impactor/separator element and devices comprising an impactor separator/element of this type Feb 11, 2021 Issued
Array ( [id] => 17096334 [patent_doc_number] => 20210284125 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-09-16 [patent_title] => ELECTRIC SUPERCHARGER-EQUIPPED MOVING MACHINE [patent_app_type] => utility [patent_app_number] => 17/172412 [patent_app_country] => US [patent_app_date] => 2021-02-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5024 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 133 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17172412 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/172412
Electric supercharger-equipped moving machine Feb 9, 2021 Issued
Array ( [id] => 17126943 [patent_doc_number] => 20210301712 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-09-30 [patent_title] => COOLING DEVICE FOR VEHICLE [patent_app_type] => utility [patent_app_number] => 17/171171 [patent_app_country] => US [patent_app_date] => 2021-02-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5738 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 117 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17171171 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/171171
Cooling device for vehicle Feb 8, 2021 Issued
Array ( [id] => 16870924 [patent_doc_number] => 20210164391 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-06-03 [patent_title] => FUEL GELLING PREVENTION USING ENGINE AUTO START FUNCTIONALITY [patent_app_type] => utility [patent_app_number] => 17/171643 [patent_app_country] => US [patent_app_date] => 2021-02-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4513 [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] => 17171643 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/171643
Fuel gelling prevention using engine auto start functionality Feb 8, 2021 Issued
Array ( [id] => 17650221 [patent_doc_number] => 11352937 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2022-06-07 [patent_title] => Marine drives and cooling systems for marine drives having a crankcase cooler [patent_app_type] => utility [patent_app_number] => 17/169952 [patent_app_country] => US [patent_app_date] => 2021-02-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 5492 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 116 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17169952 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/169952
Marine drives and cooling systems for marine drives having a crankcase cooler Feb 7, 2021 Issued
Array ( [id] => 17845451 [patent_doc_number] => 11434810 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-09-06 [patent_title] => Vehicle thermal management system including mechanically driven pump, rotary valve(s), bypass line allowing engine outlet coolant to bypass heat exchanger(s), or combinations thereof [patent_app_type] => utility [patent_app_number] => 17/167676 [patent_app_country] => US [patent_app_date] => 2021-02-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 8464 [patent_no_of_claims] => 16 [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] => 17167676 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/167676
Vehicle thermal management system including mechanically driven pump, rotary valve(s), bypass line allowing engine outlet coolant to bypass heat exchanger(s), or combinations thereof Feb 3, 2021 Issued
Array ( [id] => 18512041 [patent_doc_number] => 20230228237 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-07-20 [patent_title] => High-Pressure Fuel Pump [patent_app_type] => utility [patent_app_number] => 17/914595 [patent_app_country] => US [patent_app_date] => 2021-02-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4248 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [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] => 17914595 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/914595
High-Pressure Fuel Pump Jan 31, 2021 Abandoned
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