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] => 18831442 [patent_doc_number] => 20230399969 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-12-14 [patent_title] => CATALYST DEVICE [patent_app_type] => utility [patent_app_number] => 18/329579 [patent_app_country] => US [patent_app_date] => 2023-06-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4102 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -3 [patent_words_short_claim] => 185 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18329579 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/329579
Catalyst device Jun 5, 2023 Issued
Array ( [id] => 18964716 [patent_doc_number] => 11898472 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2024-02-13 [patent_title] => Hydraulically lockable variable camshaft phaser [patent_app_type] => utility [patent_app_number] => 18/206366 [patent_app_country] => US [patent_app_date] => 2023-06-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 13 [patent_no_of_words] => 3324 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 194 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18206366 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/206366
Hydraulically lockable variable camshaft phaser Jun 5, 2023 Issued
Array ( [id] => 18964754 [patent_doc_number] => 11898510 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2024-02-13 [patent_title] => Filter regeneration control device [patent_app_type] => utility [patent_app_number] => 18/325116 [patent_app_country] => US [patent_app_date] => 2023-05-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 3502 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 163 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18325116 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/325116
Filter regeneration control device May 29, 2023 Issued
Array ( [id] => 19083692 [patent_doc_number] => 20240110493 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-04-04 [patent_title] => ROLLER PIN DECOUPLING TYPE CDA SYSTEM [patent_app_type] => utility [patent_app_number] => 18/325522 [patent_app_country] => US [patent_app_date] => 2023-05-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5425 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [patent_words_short_claim] => 102 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18325522 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/325522
ROLLER PIN DECOUPLING TYPE CDA SYSTEM May 29, 2023 Abandoned
Array ( [id] => 18948649 [patent_doc_number] => 11891935 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2024-02-06 [patent_title] => Exhaust gas purification apparatus [patent_app_type] => utility [patent_app_number] => 18/322590 [patent_app_country] => US [patent_app_date] => 2023-05-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 6 [patent_no_of_words] => 6846 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 170 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18322590 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/322590
Exhaust gas purification apparatus May 23, 2023 Issued
Array ( [id] => 18650204 [patent_doc_number] => 20230296036 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-09-21 [patent_title] => CYLINDER DEACTIVATION AND ENGINE BRAKE MECHANISM FOR TYPE III CENTER PIVOT VALVETRAINS [patent_app_type] => utility [patent_app_number] => 18/318884 [patent_app_country] => US [patent_app_date] => 2023-05-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5051 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 147 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18318884 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/318884
Cylinder deactivation and engine brake mechanism for type III center pivot valvetrains May 16, 2023 Issued
Array ( [id] => 18809351 [patent_doc_number] => 20230383686 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-11-30 [patent_title] => EXHAUST CATALYST MANAGEMENT APPARATUS TO BE APPLIED TO VEHICLE [patent_app_type] => utility [patent_app_number] => 18/318253 [patent_app_country] => US [patent_app_date] => 2023-05-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 16251 [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] => 18318253 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/318253
Exhaust catalyst management apparatus to be applied to vehicle May 15, 2023 Issued
Array ( [id] => 18530617 [patent_doc_number] => 20230235687 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-07-27 [patent_title] => COMPACT ENGINE BRAKE WITH PRESSURE-CONTROL RESET [patent_app_type] => utility [patent_app_number] => 18/130087 [patent_app_country] => US [patent_app_date] => 2023-04-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11664 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 374 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18130087 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/130087
COMPACT ENGINE BRAKE WITH PRESSURE-CONTROL RESET Apr 2, 2023 Abandoned
Array ( [id] => 18676090 [patent_doc_number] => 20230313714 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-10-05 [patent_title] => SYSTEMS AND METHODS FOR LASH ADJUSTMENT AND CYLINDER DEACTIVATION FOR INTERNAL COMBUSTION ENGINES [patent_app_type] => utility [patent_app_number] => 18/190454 [patent_app_country] => US [patent_app_date] => 2023-03-27 [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] => -18 [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] => 18190454 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/190454
SYSTEMS AND METHODS FOR LASH ADJUSTMENT AND CYLINDER DEACTIVATION FOR INTERNAL COMBUSTION ENGINES Mar 26, 2023 Abandoned
Array ( [id] => 18871730 [patent_doc_number] => 11859520 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2024-01-02 [patent_title] => Extended phaser range of authority for reduced effective compression ratio during engine starting [patent_app_type] => utility [patent_app_number] => 18/189579 [patent_app_country] => US [patent_app_date] => 2023-03-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 2825 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 2 [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] => 18189579 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/189579
Extended phaser range of authority for reduced effective compression ratio during engine starting Mar 23, 2023 Issued
Array ( [id] => 18567805 [patent_doc_number] => 20230258140 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-08-17 [patent_title] => Verfahren, Recheneinheit und Computerprogramm zum Betreiben einer Brennkraftmaschine [patent_app_type] => utility [patent_app_number] => 18/170318 [patent_app_country] => US [patent_app_date] => 2023-02-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5062 [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] => 18170318 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/170318
Method, computing unit, and computer program for operating an internal-combustion engine Feb 15, 2023 Issued
Array ( [id] => 20008207 [patent_doc_number] => 20250146429 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-05-08 [patent_title] => A PHASE CHANGE SYSTEM FOR OPENING AND/OR CLOSING INTAKE VALVES [patent_app_type] => utility [patent_app_number] => 18/838299 [patent_app_country] => US [patent_app_date] => 2023-02-14 [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] => -11 [patent_words_short_claim] => 374 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18838299 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/838299
A PHASE CHANGE SYSTEM FOR OPENING AND/OR CLOSING INTAKE VALVES Feb 13, 2023 Pending
Array ( [id] => 18552730 [patent_doc_number] => 20230250741 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-08-10 [patent_title] => VARIABLE VALVE TIMING SYSTEM [patent_app_type] => utility [patent_app_number] => 18/157412 [patent_app_country] => US [patent_app_date] => 2023-01-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10966 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -5 [patent_words_short_claim] => 185 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18157412 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/157412
Variable valve timing system Jan 19, 2023 Issued
Array ( [id] => 18666872 [patent_doc_number] => 11773755 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-10-03 [patent_title] => Variable valve timing system [patent_app_type] => utility [patent_app_number] => 18/157005 [patent_app_country] => US [patent_app_date] => 2023-01-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 14 [patent_no_of_words] => 11607 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 214 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18157005 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/157005
Variable valve timing system Jan 18, 2023 Issued
Array ( [id] => 19166350 [patent_doc_number] => 11982244 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2024-05-14 [patent_title] => System and method for in-cylinder dosing (ICD) for an engine [patent_app_type] => utility [patent_app_number] => 18/082608 [patent_app_country] => US [patent_app_date] => 2022-12-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 16 [patent_no_of_words] => 12541 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 203 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18082608 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/082608
System and method for in-cylinder dosing (ICD) for an engine Dec 15, 2022 Issued
Array ( [id] => 18392105 [patent_doc_number] => 20230160324 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-05-25 [patent_title] => VALVE TRAIN ASSEMBLY [patent_app_type] => utility [patent_app_number] => 18/064497 [patent_app_country] => US [patent_app_date] => 2022-12-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5170 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -6 [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] => 18064497 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/064497
Valve train assembly Dec 11, 2022 Issued
Array ( [id] => 18392107 [patent_doc_number] => 20230160326 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-05-25 [patent_title] => Method and Apparatus to Enhance Fractional Efficiency of Diesel and Gasoline Particulate Filters [patent_app_type] => utility [patent_app_number] => 18/075031 [patent_app_country] => US [patent_app_date] => 2022-12-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5829 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [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] => 18075031 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/075031
Method and apparatus to enhance fractional efficiency of diesel and gasoline particulate filters Dec 4, 2022 Issued
Array ( [id] => 19898302 [patent_doc_number] => 12276213 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-04-15 [patent_title] => Valve train for an internal combustion engine, in particular of a motor vehicle, and internal combustion engine [patent_app_type] => utility [patent_app_number] => 18/711993 [patent_app_country] => US [patent_app_date] => 2022-11-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 1273 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 170 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18711993 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/711993
Valve train for an internal combustion engine, in particular of a motor vehicle, and internal combustion engine Nov 20, 2022 Issued
Array ( [id] => 20158810 [patent_doc_number] => 12385427 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-08-12 [patent_title] => Vehicle exhaust systems [patent_app_type] => utility [patent_app_number] => 18/716622 [patent_app_country] => US [patent_app_date] => 2022-11-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 10 [patent_no_of_words] => 0 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 171 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18716622 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/716622
Vehicle exhaust systems Nov 14, 2022 Issued
Array ( [id] => 20158810 [patent_doc_number] => 12385427 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-08-12 [patent_title] => Vehicle exhaust systems [patent_app_type] => utility [patent_app_number] => 18/716622 [patent_app_country] => US [patent_app_date] => 2022-11-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 10 [patent_no_of_words] => 0 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 171 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18716622 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/716622
Vehicle exhaust systems Nov 14, 2022 Issued
Menu