Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
GK

Gregory W. Kempf — 15 Patents

General Motors: 13 patents #1,134 of 18,328Top 7%
Daimlerchrysler Ag: 3 patents #620 of 4,854Top 15%
SISiemens Industry: 1 patents #380 of 836Top 50%
SASiemens Schweiz Ag: 1 patents #109 of 341Top 35%
Rochester Hills, MI: #146 of 1,754 inventorsTop 9%
Michigan: #5,862 of 86,293 inventorsTop 7%
Overall (All Time): #313,189 of 4,157,543Top 8%
15 Patents All Time

Issued Patents All Time

Showing 1–15 of 15 patents

Patent #TitleCo-InventorsDate
12072115 Controller and method for managing a flow unit Ryan Soo 2024-08-27
10794605 Laboratory ventilation integration James J. Coogan, Matthias Blask 2020-10-06
9457659 Transmission with integrated power take-off Chi Teck Lee 2016-10-04
9290092 Chain drive power take off for hydraulic pump Chi Teck Lee, Greg B. Witczak, Trevor Murray 2016-03-22
9038802 Clutch backing plate for bearing support Timothy J. Reinhart, Douglas S. Burchett, Kenneth D. Schoch 2015-05-26
8715128 Multi-speed transmission Douglas S. Burchett 2014-05-06
8425361 Lubrication system for a planetary gear set Kevin C. Beckner, Timothy J. Reinhart, Joel E. Mowatt 2013-04-23
8137229 Modular transmission assembly and a method of assembly Kenneth D. Schoch, Fredrick R. Poskie, Douglas S. Burchett, Frederick W. Rhoads 2012-03-20
7926819 Seals for transmission drive motors Timothy J. Reinhart, William S. Reed 2011-04-19
7810622 Transmission clutches Michael D. Foster, Joel E. Mowatt, James A. Raszkowski 2010-10-12
7399247 Sun gear bushing and sleeve and method for sealing in a hybrid electromechanical automatic transmission James A. Raszkowski 2008-07-15
7252615 Lubrication system and method for hybrid electro-mechanical planetary transmission components 2007-08-07
7247112 Method and apparatus for cooling and lubricating a hybrid transmission Michael D. Foster, James A. Raszkowski 2007-07-24
7195575 Splined sun gear and method for compact electro-mechanical transmission 2007-03-27
6652253 Hydraulic pump having a noise reduction recess Drew A. Crafton 2003-11-25