Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Oldcastle — 10 Patents

Rank (All Time): #55,940 of 106,120Top 55%
7 inventors
10 Patents All Time

Top Inventors at Oldcastle All Time

Showing 1–7 of 7 inventors

RankNamePatents
1 John A. Fifield 7
2 Barry H. Bamber 2
2 Michael E. Woolford 2
#4 George Clinton Brookhart, Jr. 1
#4 Leslie G. Hammond 1
#4 Paul V. Childress 1
#4 Alan H. Sabatino 1