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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Chester, CA ranks #31,206 worldwide for total patents filed all time, with 30 patents from 21 inventors. Leading employers of inventors based in Chester, CA include Cyden Limited, Pencom International, US Air Force. That works out to 13.7 patents per 1,000 residents, a common benchmark for comparing regional innovation intensity.

Showing 1–21 of 21 inventors

Rank Inventor Primary Company Patents
1 Simon James Fisher Cyden Limited 4
2 Paul Richard Behmen 3
2 David I. Cullumber Pencom International 3
#4 William Henry Schmunk 2
#4 Kenneth Henry 2
#6 Steve Schwegerl 1
#6 D. M. Gustafson 1
#6 Fletcher A. Burns US Air Force 1
#6 Jack A. Linn Unknown 1
#6 Danny L. Tatum 1
#6 Theresa S. McDonald 1
#6 Arnold C. McDonald 1
#6 Dana Mark Gustafson 1
#6 Woodrow L. Cook 1
#6 Wasserman Alexander G&H Technology 1
#6 Cecil D. Ray 1
#6 Gail H. Parks 1
#6 Gary C. Scott 1
#6 Arthur W. Gibson 1
#6 James V. Lovie Varian 1
#6 Millard Meeks 1

Part of California