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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Rick C. Wirth — 6 Patents

General Motors: 6 patents #2,630 of 18,328Top 15%
Alto, MI: #18 of 84 inventorsTop 25%
Michigan: #15,817 of 86,293 inventorsTop 20%
Overall (All Time): #779,687 of 4,157,543Top 20%
6 Patents All Time
Rick C. Wirth has been granted 6 US patents while listed as an inventor at General Motors. The first was granted in 1984 and the most recent in May 1994. Rick C. Wirth ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list Rick C. Wirth in Alto, MI, US.

Patents per Year

Patents granted per year, 1984 to 1994Bar chart with a peak of 3 patents in 1988.peak 31984: 1 patents19841988: 3 patents19881993: 1 patents19931994: 1 patents1994

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
5307769 Low mass roller valve lifter assembly Richard Meagher, Thomas Braun 1994-05-03
5263386 Roller cam follower guide Darryl J. Campbell, Creighton A. Mantey, Jr., Richard C. Pickelhaupt, Guy Ernest Giannone 1993-11-23
4724804 Engine valve train module 1988-02-16
4724805 Engine valve train module Charles M. Philo 1988-02-16
4721074 Engine valve train module Edward L. DeKiep 1988-01-26
4481913 Hydraulic lash adjuster oil metering ball valve 1984-11-13