Search

Kevin H. Sprenger

Examiner (ID: 6769, Phone: (571)272-9424 , Office: P/2838 )

Most Active Art Unit
2838
Art Unit(s)
2838
Total Applications
293
Issued Applications
246
Pending Applications
0
Abandoned Applications
48

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 19826732 [patent_doc_number] => 12247502 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-03-11 [patent_title] => Multi-cylinder internal combustion engine, with cylinders equipped with intake valve variable actuation systems having hydraulic circuits which cross each other [patent_app_type] => utility [patent_app_number] => 18/708390 [patent_app_country] => US [patent_app_date] => 2022-11-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 10 [patent_no_of_words] => 6154 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 461 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18708390 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/708390
Multi-cylinder internal combustion engine, with cylinders equipped with intake valve variable actuation systems having hydraulic circuits which cross each other Nov 13, 2022 Issued
Array ( [id] => 19724681 [patent_doc_number] => 20250027432 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-01-23 [patent_title] => CAMSHAFT PHASER HAVING NON-RETURN VALVES [patent_app_type] => utility [patent_app_number] => 18/708610 [patent_app_country] => US [patent_app_date] => 2022-11-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3284 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [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] => 18708610 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/708610
Camshaft phaser having non-return valves Nov 10, 2022 Issued
Array ( [id] => 19158458 [patent_doc_number] => 20240151165 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-09 [patent_title] => Three Valve Cylinder Head Assembly [patent_app_type] => utility [patent_app_number] => 17/980158 [patent_app_country] => US [patent_app_date] => 2022-11-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2889 [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] => 17980158 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/980158
Three Valve Cylinder Head Assembly Nov 2, 2022 Pending
Array ( [id] => 18334072 [patent_doc_number] => 20230126020 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-04-27 [patent_title] => VEHICLE [patent_app_type] => utility [patent_app_number] => 18/048204 [patent_app_country] => US [patent_app_date] => 2022-10-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3200 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -3 [patent_words_short_claim] => 107 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18048204 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/048204
Waste gate valve closing control Oct 19, 2022 Issued
Array ( [id] => 18492609 [patent_doc_number] => 11698020 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-07-11 [patent_title] => Valve mounting structure [patent_app_type] => utility [patent_app_number] => 17/954187 [patent_app_country] => US [patent_app_date] => 2022-09-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 12 [patent_no_of_words] => 5708 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 139 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17954187 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/954187
Valve mounting structure Sep 26, 2022 Issued
Array ( [id] => 19601835 [patent_doc_number] => 20240392715 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-11-28 [patent_title] => CATALYTIC SYSTEM COMPRISING ANTIMONY-CONTAINING CATALYST [patent_app_type] => utility [patent_app_number] => 18/694217 [patent_app_country] => US [patent_app_date] => 2022-09-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9434 [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] => 18694217 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/694217
Catalytic system comprising antimony-containing catalyst Sep 25, 2022 Issued
Array ( [id] => 18287716 [patent_doc_number] => 20230103188 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-03-30 [patent_title] => EXHAUST STRUCTURE [patent_app_type] => utility [patent_app_number] => 17/952299 [patent_app_country] => US [patent_app_date] => 2022-09-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2069 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -5 [patent_words_short_claim] => 81 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17952299 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/952299
Exhaust structure Sep 24, 2022 Issued
Array ( [id] => 19464913 [patent_doc_number] => 20240318582 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-09-26 [patent_title] => SHIFT GATE, SLIDING CAM SYSTEM AND CAMSHAFT [patent_app_type] => utility [patent_app_number] => 18/694748 [patent_app_country] => US [patent_app_date] => 2022-09-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4543 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [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] => 18694748 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/694748
Shift gate, sliding cam system and camshaft Sep 19, 2022 Issued
Array ( [id] => 19374396 [patent_doc_number] => 12065951 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-08-20 [patent_title] => Apparatus and method for assembling an engine [patent_app_type] => utility [patent_app_number] => 17/900035 [patent_app_country] => US [patent_app_date] => 2022-08-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 4957 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 2 [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] => 17900035 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/900035
Apparatus and method for assembling an engine Aug 30, 2022 Issued
Array ( [id] => 18805815 [patent_doc_number] => 11838995 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-12-05 [patent_title] => Exhaust gas heater and method for making the same [patent_app_type] => utility [patent_app_number] => 17/822486 [patent_app_country] => US [patent_app_date] => 2022-08-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 3 [patent_no_of_words] => 4095 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 122 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17822486 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/822486
Exhaust gas heater and method for making the same Aug 25, 2022 Issued
Array ( [id] => 19274928 [patent_doc_number] => 12025045 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-07-02 [patent_title] => Exhaust gas system for an internal combustion engine [patent_app_type] => utility [patent_app_number] => 17/889552 [patent_app_country] => US [patent_app_date] => 2022-08-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 6 [patent_no_of_words] => 4888 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 405 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17889552 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/889552
Exhaust gas system for an internal combustion engine Aug 16, 2022 Issued
Array ( [id] => 18058759 [patent_doc_number] => 20220389845 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-12-08 [patent_title] => ENGINE VALVE ACTUATION [patent_app_type] => utility [patent_app_number] => 17/886699 [patent_app_country] => US [patent_app_date] => 2022-08-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 15981 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 12 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17886699 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/886699
Engine valve actuation Aug 11, 2022 Issued
Array ( [id] => 19659164 [patent_doc_number] => 20240426229 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-12-26 [patent_title] => CAMSHAFT ADJUSTER WITH RESET FUNCTION [patent_app_type] => utility [patent_app_number] => 18/689908 [patent_app_country] => US [patent_app_date] => 2022-08-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3298 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 142 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18689908 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/689908
Camshaft adjuster with reset function Aug 9, 2022 Issued
Array ( [id] => 19724714 [patent_doc_number] => 20250027465 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-01-23 [patent_title] => AIR ACCELERATOR AND AIR COOLER APPARATUS IN INTERNAL COMBUSTION ENGINES [patent_app_type] => utility [patent_app_number] => 18/548819 [patent_app_country] => US [patent_app_date] => 2022-08-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1223 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -6 [patent_words_short_claim] => 23 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18548819 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/548819
AIR ACCELERATOR AND AIR COOLER APPARATUS IN INTERNAL COMBUSTION ENGINES Aug 9, 2022 Abandoned
Array ( [id] => 18196889 [patent_doc_number] => 20230050408 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-02-16 [patent_title] => Cam Phase Actuator Control Systems and Methods [patent_app_type] => utility [patent_app_number] => 17/885414 [patent_app_country] => US [patent_app_date] => 2022-08-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9527 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 76 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17885414 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/885414
Cam Phase Actuator Control Systems and Methods Aug 9, 2022 Abandoned
Array ( [id] => 18141551 [patent_doc_number] => 20230015394 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-01-19 [patent_title] => VALVE ACTUATION SYSTEM COMPRISING PARALLEL LOST MOTION COMPONENTS DEPLOYED IN A ROCKER ARM AND VALVE BRIDGE [patent_app_type] => utility [patent_app_number] => 17/818251 [patent_app_country] => US [patent_app_date] => 2022-08-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 12972 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 201 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17818251 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/818251
Valve actuation system comprising parallel lost motion components deployed in a rocker arm and valve bridge Aug 7, 2022 Issued
Array ( [id] => 18164651 [patent_doc_number] => 20230031247 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-02-02 [patent_title] => COMBINED PLUG-SENSOR WHEEL FOR A CAMSHAFT [patent_app_type] => utility [patent_app_number] => 17/877800 [patent_app_country] => US [patent_app_date] => 2022-07-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2406 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 29 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17877800 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/877800
Combined plug-sensor wheel for a camshaft Jul 28, 2022 Issued
Array ( [id] => 20116498 [patent_doc_number] => 12366192 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-07-22 [patent_title] => Directed secondary air supply into the exhaust tract of an internal combustion engine [patent_app_type] => utility [patent_app_number] => 18/294713 [patent_app_country] => US [patent_app_date] => 2022-07-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 0 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 144 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18294713 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/294713
Directed secondary air supply into the exhaust tract of an internal combustion engine Jul 18, 2022 Issued
Array ( [id] => 18369579 [patent_doc_number] => 11649739 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-05-16 [patent_title] => Valve bridge constraints and guides and related methods [patent_app_type] => utility [patent_app_number] => 17/812063 [patent_app_country] => US [patent_app_date] => 2022-07-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 18 [patent_no_of_words] => 6263 [patent_no_of_claims] => 24 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 99 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17812063 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/812063
Valve bridge constraints and guides and related methods Jul 11, 2022 Issued
Array ( [id] => 18315551 [patent_doc_number] => 11629625 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2023-04-18 [patent_title] => Systems and methods of engine exhaust air injection before and after catalytic converters [patent_app_type] => utility [patent_app_number] => 17/810720 [patent_app_country] => US [patent_app_date] => 2022-07-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 9751 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 243 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17810720 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/810720
Systems and methods of engine exhaust air injection before and after catalytic converters Jul 4, 2022 Issued
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