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USPTO Patent Rankings Data through Dec 31, 2025
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Michael R. Witkowski — 6 Patents

SASaturn: 6 patents #5 of 112Top 5%
DEDelco Electronics: 5 patents #59 of 908Top 7%
Sterling Heights, MI: #230 of 1,485 inventorsTop 20%
Michigan: #15,817 of 86,293 inventorsTop 20%
Overall (All Time): #779,687 of 4,157,543Top 20%
6 Patents All Time
Michael R. Witkowski has been granted 6 US patents while listed as an inventor at Saturn. The first was granted in 1991 and the most recent in July 1994. Michael R. Witkowski ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list Michael R. Witkowski in Sterling Heights, MI, US.

Patents per Year

Patents granted per year, 1991 to 1994Bar chart with a peak of 3 patents in 1992.peak 31991: 1 patents19911992: 3 patents19921994: 2 patents1994

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
5327868 Vehicle ignition system having adaptive knock retard with starting temperature correction Michael L. Velliky, Keith C. Mitchell, Kenneth R. Kridner, William J. Bolander 1994-07-12
5289739 Engine idle fuel control during transmission range shifting David C. Muscaro, Larry T. Nitz 1994-03-01
5163399 Method for adjusting engine output power to compensate for loading due to a variable capacity air conditioning compressor William J. Bolander 1992-11-17
5163404 Vehicle engine ignition timing system and method with windowing knock control William J. Bolander, Kenneth R. Kridner 1992-11-17
5079946 Valve position sensor diagnostic Nader Motamedi, William J. Bolander 1992-01-14
5056022 Throttle position sensor error recovery control method William J. Bolander, Larry T. Nitz 1991-10-08