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

Duro-Last — 8 Patents

Rank (All Time): #66,437 of 105,732Top 65%
8 inventors
8 Patents All Time

Patents per Year

Patents granted per year, 1992 to 2017Bar chart with a peak of 2 patents in 2017.peak 21992: 1 patents19921998: 1 patents19982007: 1 patents20072011: 1 patents20112013: 1 patents20132014: 1 patents20142017: 2 patents2017

Top Inventors at Duro-Last All Time

Showing 1–8 of 8 inventors

RankNamePatents
1 Keith Allan Gere 3
2 Jeff Traska 2
3 Harry Hermanson 1
3 Gregory A. Korf 1
3 Robert C. Hultz 1
3 Timothy Hart 1
3 Todd Fritz 1
3 David R. Grussing 1