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

Richard H. Koehler

Tisbury, MA: #3 of 4 inventorsTop 75%
Massachusetts: #5,264 of 14,267 inventorsTop 40%
Overall (2019): #299,610 of 560,194Top 55%
1 Patents 2019

Issued Patents 2019

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10207129 Face mask seal for use with respirator devices and surgical facemasks, having an anatomically defined geometry conforming to critical fit zones of human facial anatomy, and capable of being actively custom fitted to the user's face 2019-02-19