Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
JD

Jon C. Darrow — 6 Patents

Delphi Technologies: 6 patents #520 of 4,124Top 15%
Howell, MI: #112 of 595 inventorsTop 20%
Michigan: #15,817 of 86,293 inventorsTop 20%
Overall (All Time): #779,687 of 4,157,543Top 20%
6 Patents All Time
Jon C. Darrow has been granted 6 US patents while listed as an inventor at Delphi Technologies. The first was granted in 2006 and the most recent in August 2009. Jon C. Darrow ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list Jon C. Darrow in Howell, MI, US.

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
7571047 Detection of valve deactivation failure by monitoring exhaust temperature Jeffrey M. Pfeiffer 2009-08-04
7325534 Supplemental internal air cooling of an internal combustion engine James P. Waters, Timothy W. Kunz 2008-02-05
7314034 System for verifying cylinder deactivation status in a multi-cylinder engine James P. Waters, Kenneth M. Simpson 2008-01-01
7063057 Method for effectively diagnosing the operational state of a variable valve lift device James P. Waters 2006-06-20
7047924 Method for diagnosing the operational state of a two-step variable valve lift device James P. Waters 2006-05-23
7047957 Method and apparatus for monitoring a multiple step valve lifter James C. Smith 2006-05-23