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] => 15682403 [patent_doc_number] => 20200095865 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-03-26 [patent_title] => SYSTEM FOR THE REVERSIBLE TRANSFORMATION OF A RECIPROCATING MOTION IN A ROTARY MOTION [patent_app_type] => utility [patent_app_number] => 16/468110 [patent_app_country] => US [patent_app_date] => 2017-12-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7824 [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] => 16468110 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/468110
System for the reversible transformation of a reciprocating motion in a rotary motion Dec 8, 2017 Issued
Array ( [id] => 12220009 [patent_doc_number] => 20180058368 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-03-01 [patent_title] => 'CYLINDER LINER FOR AN OPPOSED-PISTON ENGINE' [patent_app_type] => utility [patent_app_number] => 15/806225 [patent_app_country] => US [patent_app_date] => 2017-11-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 3322 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15806225 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/806225
Cylinder liner for an opposed-piston engine Nov 6, 2017 Issued
Array ( [id] => 15118471 [patent_doc_number] => 20190345868 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-11-14 [patent_title] => ELECTRIC COOLANT PUMP [patent_app_type] => utility [patent_app_number] => 16/349602 [patent_app_country] => US [patent_app_date] => 2017-10-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3437 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 79 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16349602 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/349602
ELECTRIC COOLANT PUMP Oct 24, 2017 Abandoned
Array ( [id] => 15558459 [patent_doc_number] => 20200063641 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-02-27 [patent_title] => INTAKE DEVICE FOR MULTI-CYLINDER ENGINE [patent_app_type] => utility [patent_app_number] => 16/344103 [patent_app_country] => US [patent_app_date] => 2017-10-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7376 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 135 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16344103 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/344103
INTAKE DEVICE FOR MULTI-CYLINDER ENGINE Oct 24, 2017 Abandoned
Array ( [id] => 15423677 [patent_doc_number] => 10544759 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-01-28 [patent_title] => Air induction systems for internal combustion engines [patent_app_type] => utility [patent_app_number] => 15/792094 [patent_app_country] => US [patent_app_date] => 2017-10-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 13 [patent_no_of_words] => 4078 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 225 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15792094 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/792094
Air induction systems for internal combustion engines Oct 23, 2017 Issued
Array ( [id] => 15118469 [patent_doc_number] => 20190345867 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-11-14 [patent_title] => MOTOR VEHICLE [patent_app_type] => utility [patent_app_number] => 16/349598 [patent_app_country] => US [patent_app_date] => 2017-10-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4526 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 146 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16349598 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/349598
Motor vehicle Oct 22, 2017 Issued
Array ( [id] => 17800798 [patent_doc_number] => 11415088 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2022-08-16 [patent_title] => Systems and methods for reduction of emissions and improving the efficiency of diesel internal combustion engines [patent_app_type] => utility [patent_app_number] => 15/724910 [patent_app_country] => US [patent_app_date] => 2017-10-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 12 [patent_no_of_words] => 11818 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 220 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15724910 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/724910
Systems and methods for reduction of emissions and improving the efficiency of diesel internal combustion engines Oct 3, 2017 Issued
Array ( [id] => 16550271 [patent_doc_number] => 10883421 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-01-05 [patent_title] => Actuator of variable compression ratio mechanism and actuator of link mechanism [patent_app_type] => utility [patent_app_number] => 15/715385 [patent_app_country] => US [patent_app_date] => 2017-09-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 9 [patent_no_of_words] => 6346 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 2 [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] => 15715385 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/715385
Actuator of variable compression ratio mechanism and actuator of link mechanism Sep 25, 2017 Issued
Array ( [id] => 15437103 [patent_doc_number] => 20200032735 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-01-30 [patent_title] => INTERNAL COMBUSTION ENGINE CONTROL DEVICE [patent_app_type] => utility [patent_app_number] => 16/337546 [patent_app_country] => US [patent_app_date] => 2017-09-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11885 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -7 [patent_words_short_claim] => 153 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16337546 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/337546
Internal combustion engine control device Sep 12, 2017 Issued
Array ( [id] => 14686425 [patent_doc_number] => 20190242327 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-08-08 [patent_title] => SYSTEMS AND METHODS FOR AVOIDING STRUCTURAL FAILURE RESULTING FROM HOT HIGH CYCLES USING A CYLINDER HEAD COOLING ARRANGEMENT [patent_app_type] => utility [patent_app_number] => 16/333298 [patent_app_country] => US [patent_app_date] => 2017-09-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9350 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 101 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16333298 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/333298
Systems and methods for avoiding structural failure resulting from hot high cycles using a cylinder head cooling arrangement Sep 6, 2017 Issued
Array ( [id] => 16290923 [patent_doc_number] => 10767764 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-09-08 [patent_title] => Turbocharger [patent_app_type] => utility [patent_app_number] => 15/680892 [patent_app_country] => US [patent_app_date] => 2017-08-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 3 [patent_no_of_words] => 1824 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 38 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15680892 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/680892
Turbocharger Aug 17, 2017 Issued
Array ( [id] => 12220137 [patent_doc_number] => 20180058497 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-03-01 [patent_title] => 'CONNECTING ROD OF ENGINE' [patent_app_type] => utility [patent_app_number] => 15/673061 [patent_app_country] => US [patent_app_date] => 2017-08-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 14 [patent_no_of_words] => 6321 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15673061 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/673061
Connecting rod of engine Aug 8, 2017 Issued
Array ( [id] => 13704187 [patent_doc_number] => 20170363048 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2017-12-21 [patent_title] => AIR INTAKE HEATER SYSTEM AND METHODS [patent_app_type] => utility [patent_app_number] => 15/668548 [patent_app_country] => US [patent_app_date] => 2017-08-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13356 [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] => 15668548 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/668548
AIR INTAKE HEATER SYSTEM AND METHODS Aug 2, 2017 Abandoned
Array ( [id] => 16353915 [patent_doc_number] => 10794419 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-10-06 [patent_title] => Composite connecting rods [patent_app_type] => utility [patent_app_number] => 15/659237 [patent_app_country] => US [patent_app_date] => 2017-07-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 32 [patent_no_of_words] => 5418 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 256 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15659237 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/659237
Composite connecting rods Jul 24, 2017 Issued
Array ( [id] => 16305955 [patent_doc_number] => 10774736 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-09-15 [patent_title] => V6 crankstar and firing sequences [patent_app_type] => utility [patent_app_number] => 16/319071 [patent_app_country] => US [patent_app_date] => 2017-07-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 15 [patent_no_of_words] => 5838 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 67 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16319071 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/319071
V6 crankstar and firing sequences Jul 17, 2017 Issued
Array ( [id] => 15949939 [patent_doc_number] => 10662865 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-05-26 [patent_title] => Method of remanufacturing a prechamber assembly [patent_app_type] => utility [patent_app_number] => 15/651231 [patent_app_country] => US [patent_app_date] => 2017-07-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 7 [patent_no_of_words] => 7180 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 225 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15651231 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/651231
Method of remanufacturing a prechamber assembly Jul 16, 2017 Issued
Array ( [id] => 16062289 [patent_doc_number] => 10690083 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-06-23 [patent_title] => Air-fuel ration control apparatus for engine [patent_app_type] => utility [patent_app_number] => 15/648489 [patent_app_country] => US [patent_app_date] => 2017-07-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 10 [patent_no_of_words] => 9412 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 392 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15648489 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/648489
Air-fuel ration control apparatus for engine Jul 12, 2017 Issued
Array ( [id] => 15194973 [patent_doc_number] => 10494968 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2019-12-03 [patent_title] => Oil separator for an internal combustion engine [patent_app_type] => utility [patent_app_number] => 15/643275 [patent_app_country] => US [patent_app_date] => 2017-07-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 2218 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 229 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15643275 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/643275
Oil separator for an internal combustion engine Jul 5, 2017 Issued
Array ( [id] => 12126958 [patent_doc_number] => 20180010543 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-01-11 [patent_title] => 'DIRECT-INJECTION, SUPERCHARGED INTERNAL COMBUSTION ENGINE WITH HIGH-PRESSURE FUEL PUMP, AND METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE OF SAID TYPE' [patent_app_type] => utility [patent_app_number] => 15/640116 [patent_app_country] => US [patent_app_date] => 2017-06-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 11421 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15640116 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/640116
Direct-injection, supercharged internal combustion engine with high-pressure fuel pump, and method for operating an internal combustion engine of said type Jun 29, 2017 Issued
Array ( [id] => 13779555 [patent_doc_number] => 20190003316 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-01-03 [patent_title] => HELICAL SKIN COOLING PASSAGES FOR TURBINE AIRFOILS [patent_app_type] => utility [patent_app_number] => 15/638021 [patent_app_country] => US [patent_app_date] => 2017-06-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5659 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 65 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15638021 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/638021
HELICAL SKIN COOLING PASSAGES FOR TURBINE AIRFOILS Jun 28, 2017 Abandoned
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