William Johnsen — 5 Patents at Echo Pixel

William Johnsen has been granted 5 US patents while listed as an inventor at Echo Pixel. The first was granted in 1994 and the most recent in August 2020. William Johnsen ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list William Johnsen in Sunnyvale, CA, US.

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #	Title	Co-Inventors	Date
10755378	Multi-point annotation using a haptic plane	Sergio Aguirre-Valencia, Anthony Chen	2020-08-25
10755379	Multi-point annotation using a haptic plane	Sergio Aguirre-Valencia, Anthony Chen	2020-08-25
10078885	Image annotation using a haptic plane	Sergio Aguirre-Valencia, Anthony Chen	2018-09-18
9384528	Image annotation using a haptic plane	Sergio Aguirre-Valencia, Anthony Chen	2016-07-05
5307292	Method of quantifying the topographic structure of a surface	Christopher A. Brown, Patrick Charles	1994-04-26

William Johnsen — 5 Patents

Issued Patents All Time

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