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

E. Roy John — 7 Patents

Mamaroneck, NY: #37 of 184 inventorsTop 25%
New York: #20,477 of 115,490 inventorsTop 20%
Overall (All Time): #680,018 of 4,157,543Top 20%
7 Patents All Time
E. Roy John has been granted 7 US patents. The first was granted in 1980 and the most recent in October 1985. E. Roy John ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list E. Roy John in Mamaroneck, NY, US.

Patents per Year

Patents granted per year, 1980 to 1985Bar chart with a peak of 3 patents in 1980.peak 31980: 3 patents19801981: 1 patents19811983: 2 patents19831985: 1 patents1985

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
4545388 Self-normed brain state monitoring 1985-10-08
4417592 Digital electroencephalographic instrument and method 1983-11-29
4411273 System and method for electrode pair derivations in electroencephalography 1983-10-25
4279258 Rapid automatic electroencephalographic evaluation 1981-07-21
4216781 Methods of electrophysiological testing 1980-08-12
4201224 Electroencephalographic method and system for the quantitative description of patient brain states 1980-05-06
4188956 Method for the analysis, display and classification of multivariate indices of brain function--a functional electrophysiological brain scan 1980-02-19