Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Mark C. Hoffman — 4 Patents

ZIZimpro: 2 patents #1 of 15Top 7%
Mosinee, WI: #11 of 56 inventorsTop 20%
Wisconsin: #10,875 of 40,088 inventorsTop 30%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Mark C. Hoffman has been granted 4 US patents while listed as an inventor at Zimpro. The first was granted in 1988 and the most recent in October 2013. Mark C. Hoffman ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Mark C. Hoffman in Mosinee, WI, US.

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
8561365 Versatile hybrid window system Scott D. Albrecht, James L. Peterson 2013-10-22
7816343 Wood preservative composition 2010-10-19
4778598 Separation of ash from regenerated adsorbent Marvin J. Dietrich, Thomas Oettinger 1988-10-18
4735729 Ash concentration and disposal method Marvin J. Dietrich, Thomas Oettinger 1988-04-05