Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
DP

David Richard Perchilk

Microsoft: 2 patents #17,506 of 40,388Top 45%
Redmond, WA: #4,329 of 8,547 inventorsTop 55%
Washington: #35,300 of 76,902 inventorsTop 50%
Overall (All Time): #1,962,568 of 4,157,543Top 50%
2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
10063156 Leakage reduction circuit Chee Kiong Fong, Suet Fong Tin, Michael Donovan Rulien, Perry S. Stultz, Edward C. Giaimo, III 2018-08-28
9236729 Anti-arcing circuit Chee Kiong Fong, Suet Fong Tin, Edward C. Giaimo, III, Michael Donovan Rulien, Perry S. Stultz 2016-01-12