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] => 16054311 [patent_doc_number] => 20200189010 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-06-18 [patent_title] => Method for Producing an Internal Combustion Engine [patent_app_type] => utility [patent_app_number] => 16/797213 [patent_app_country] => US [patent_app_date] => 2020-02-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2764 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 32 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16797213 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/797213
Method for producing an internal combustion engine Feb 20, 2020 Issued
Array ( [id] => 17300326 [patent_doc_number] => 20210396165 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-12-23 [patent_title] => BALANCER APPARATUS EQUIPPED WITH OIL PUMP [patent_app_type] => utility [patent_app_number] => 16/650192 [patent_app_country] => US [patent_app_date] => 2020-02-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9510 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 357 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16650192 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/650192
Balancer apparatus equipped with oil pump Feb 20, 2020 Issued
Array ( [id] => 16239093 [patent_doc_number] => 20200256327 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-08-13 [patent_title] => ELECTRIC FLUID PUMPING SYSTEM [patent_app_type] => utility [patent_app_number] => 16/788050 [patent_app_country] => US [patent_app_date] => 2020-02-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9488 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 58 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16788050 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/788050
ELECTRIC FLUID PUMPING SYSTEM Feb 10, 2020 Abandoned
Array ( [id] => 17429236 [patent_doc_number] => 20220056945 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-02-24 [patent_title] => CONNECTING ROD AND PROCESS FOR ASSEMBLING [patent_app_type] => utility [patent_app_number] => 17/428108 [patent_app_country] => US [patent_app_date] => 2020-02-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8745 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [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] => 17428108 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/428108
CONNECTING ROD AND PROCESS FOR ASSEMBLING Feb 6, 2020 Abandoned
Array ( [id] => 17596220 [patent_doc_number] => 20220145794 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-05-12 [patent_title] => Coolant Circuit in a Vehicle [patent_app_type] => utility [patent_app_number] => 17/434930 [patent_app_country] => US [patent_app_date] => 2020-02-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4386 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [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] => 17434930 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/434930
Coolant circuit in a vehicle Feb 4, 2020 Issued
Array ( [id] => 16933153 [patent_doc_number] => 20210199042 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-07-01 [patent_title] => SYSTEMS AND METHODS FOR AUTOMOBILE RADIATOR COOLING CONTROL [patent_app_type] => utility [patent_app_number] => 16/730787 [patent_app_country] => US [patent_app_date] => 2019-12-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11900 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 93 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16730787 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/730787
Systems and methods for automobile radiator cooling control Dec 29, 2019 Issued
Array ( [id] => 17514195 [patent_doc_number] => 11293335 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2022-04-05 [patent_title] => Active draining of engine cooling system [patent_app_type] => utility [patent_app_number] => 16/720653 [patent_app_country] => US [patent_app_date] => 2019-12-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 6 [patent_no_of_words] => 5688 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 162 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16720653 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/720653
Active draining of engine cooling system Dec 18, 2019 Issued
Array ( [id] => 16901624 [patent_doc_number] => 20210180540 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-06-17 [patent_title] => PISTON FOR INTERNAL COMBUSTION ENGINE HAVING VALVE POCKET STEP FOR SLOWING COMBUSTION GAS FLOW [patent_app_type] => utility [patent_app_number] => 16/717536 [patent_app_country] => US [patent_app_date] => 2019-12-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5141 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 161 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16717536 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/717536
Piston for internal combustion engine having valve pocket step for slowing combustion gas flow Dec 16, 2019 Issued
Array ( [id] => 16901562 [patent_doc_number] => 20210180478 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-06-17 [patent_title] => ENGINE HEAD ASSEMBLY WITH VALVE SEAT INSERT WITH STIFFNESS RELIEF CUTOUT [patent_app_type] => utility [patent_app_number] => 16/713633 [patent_app_country] => US [patent_app_date] => 2019-12-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3841 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 192 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16713633 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/713633
Engine head assembly with valve seat insert with stiffness relief cutout Dec 12, 2019 Issued
Array ( [id] => 17286722 [patent_doc_number] => 11203261 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-12-21 [patent_title] => Systems and methods for controlling air induction to an engine of a vehicle [patent_app_type] => utility [patent_app_number] => 16/709793 [patent_app_country] => US [patent_app_date] => 2019-12-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 15 [patent_no_of_words] => 20728 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 4 [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] => 16709793 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/709793
Systems and methods for controlling air induction to an engine of a vehicle Dec 9, 2019 Issued
Array ( [id] => 17030302 [patent_doc_number] => 11092109 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-08-17 [patent_title] => Block insert and cylinder structure of vehicle engine including the same [patent_app_type] => utility [patent_app_number] => 16/688016 [patent_app_country] => US [patent_app_date] => 2019-11-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 10 [patent_no_of_words] => 5516 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 168 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16688016 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/688016
Block insert and cylinder structure of vehicle engine including the same Nov 18, 2019 Issued
Array ( [id] => 15528453 [patent_doc_number] => 20200056532 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-02-20 [patent_title] => ENGINE COOLING SYSTEM AND METHOD FOR A SPARK IGNITED ENGINE [patent_app_type] => utility [patent_app_number] => 16/665292 [patent_app_country] => US [patent_app_date] => 2019-10-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2619 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -21 [patent_words_short_claim] => 92 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16665292 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/665292
Engine cooling system and method for a spark ignited engine Oct 27, 2019 Issued
Array ( [id] => 16777359 [patent_doc_number] => 20210114436 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-04-22 [patent_title] => SYSTEM FOR MOUNTING AN AIR CONDITIONING COMPRESSOR FROM AN EARLIER MODEL VEHICLE TO A LATER MODEL ENGINE [patent_app_type] => utility [patent_app_number] => 16/657322 [patent_app_country] => US [patent_app_date] => 2019-10-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2694 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 126 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16657322 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/657322
SYSTEM FOR MOUNTING AN AIR CONDITIONING COMPRESSOR FROM AN EARLIER MODEL VEHICLE TO A LATER MODEL ENGINE Oct 17, 2019 Abandoned
Array ( [id] => 18233706 [patent_doc_number] => 11598257 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-03-07 [patent_title] => Hub-hub connection for a power unit [patent_app_type] => utility [patent_app_number] => 17/285541 [patent_app_country] => US [patent_app_date] => 2019-10-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 3786 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 149 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17285541 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/285541
Hub-hub connection for a power unit Oct 8, 2019 Issued
Array ( [id] => 17714019 [patent_doc_number] => 11378004 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-07-05 [patent_title] => Length-adjustable connecting rod with reduced-mass outlet valve [patent_app_type] => utility [patent_app_number] => 17/283235 [patent_app_country] => US [patent_app_date] => 2019-10-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 4519 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 111 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17283235 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/283235
Length-adjustable connecting rod with reduced-mass outlet valve Oct 7, 2019 Issued
Array ( [id] => 15741787 [patent_doc_number] => 20200109781 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-04-09 [patent_title] => DETONATION RESISTANT PISTON [patent_app_type] => utility [patent_app_number] => 16/595977 [patent_app_country] => US [patent_app_date] => 2019-10-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2502 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [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] => 16595977 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/595977
DETONATION RESISTANT PISTON Oct 7, 2019 Abandoned
Array ( [id] => 16893842 [patent_doc_number] => 11035385 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-06-15 [patent_title] => Fan rotor with flow induced resonance control [patent_app_type] => utility [patent_app_number] => 16/591876 [patent_app_country] => US [patent_app_date] => 2019-10-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 3203 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 98 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16591876 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/591876
Fan rotor with flow induced resonance control Oct 2, 2019 Issued
Array ( [id] => 17030265 [patent_doc_number] => 11092072 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-08-17 [patent_title] => Throttle replacing device [patent_app_type] => utility [patent_app_number] => 16/589772 [patent_app_country] => US [patent_app_date] => 2019-10-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 12 [patent_no_of_words] => 2166 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 276 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16589772 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/589772
Throttle replacing device Sep 30, 2019 Issued
Array ( [id] => 16832623 [patent_doc_number] => 11008864 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-05-18 [patent_title] => Engine with work stroke and gas exchange through piston rod [patent_app_type] => utility [patent_app_number] => 16/585914 [patent_app_country] => US [patent_app_date] => 2019-09-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 20 [patent_figures_cnt] => 35 [patent_no_of_words] => 16729 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 221 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16585914 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/585914
Engine with work stroke and gas exchange through piston rod Sep 26, 2019 Issued
Array ( [id] => 17045467 [patent_doc_number] => 11098637 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-08-24 [patent_title] => Thermostat and coolant passage structure [patent_app_type] => utility [patent_app_number] => 16/580278 [patent_app_country] => US [patent_app_date] => 2019-09-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 5965 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 202 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16580278 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/580278
Thermostat and coolant passage structure Sep 23, 2019 Issued
Menu