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USPTO Patent Rankings Data through Sept 30, 2025
RK

Richard H. Koehler

Tisbury, MA: #1 of 3 inventorsTop 35%
Massachusetts: #2,120 of 12,163 inventorsTop 20%
Overall (2016): #105,430 of 481,213Top 25%
2 Patents 2016

Issued Patents 2016

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
9468782 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 2016-10-18
9320923 Surgical face mask, including reusable masks, with filtered inhalation and exhalation valves 2016-04-26