Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
JC

John Corcoran — 2 Patents

AMAmpex: 1 patents #119 of 247Top 50%
Los Altos, CA: #2,265 of 3,651 inventorsTop 65%
California: #187,151 of 386,348 inventorsTop 50%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
John Corcoran has been granted 2 US patents while listed as an inventor at Ampex. The first was granted in 1991 and the most recent in November 2017. John Corcoran ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list John Corcoran in Los Altos, CA, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
9828505 Polymer asphalt-rubber Hussain Bahia 2017-11-28
5031992 Multiple parallel channel rotary optical coupler 1991-07-16