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

Dur-O-Wal — 5 Patents

Rank (All Time): #100,596 of 105,732Top 100%
6 inventors
5 Patents All Time

Patents per Year

Patents granted per year, 1986 to 2003Bar chart with a peak of 3 patents in 1986.peak 31986: 3 patents19861997: 1 patents19972003: 1 patents2003

Top Inventors at Dur-O-Wal All Time

Showing 1–6 of 6 inventors

RankNamePatents
1 Mario J. Catani 3
2 Edward C. Gloppen 1
2 David A. Niday 1
2 Donald R. Graham 1
2 Norman L. Scott 1
2 Stephen Getz 1