Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Mark J. Drewitt — 2 Patents

LALanxess: 2 patents #29 of 145Top 20%
Sarnia, CA: #141 of 327 inventorsTop 45%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Mark J. Drewitt has been granted 2 US patents while listed as an inventor at Lanxess. The first was granted in 2007 and the most recent in November 2008. Mark J. Drewitt ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Mark J. Drewitt in Sarnia, ON, CA.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
7446151 Process for production of high-isoprene butyl rubber Rui Resendes, Gabor Kaszas, Stephan Glander, Gerhard Langstein, Martin Bohnenpoll 2008-11-04
7282548 Process for production of high-isoprene butyl rubber R. Resendes, Gabor Kaszas, Stephan Glander, Gerhard Langstein, Martin Bohnenpoll 2007-10-16