E. Keith Mitchell — 2 Patents | Patent Leaderboard

E. Keith Mitchell has been granted 2 US patents. The first was granted in 1988 and the most recent in February 1989. E. Keith Mitchell ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list E. Keith Mitchell in Shawnee, OK, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
4805413	Process for cryogenically separating natural gas streams	Donald N. Reed, Jr.	1989-02-21	$10,918,000
4758258	Process for recovering helium from a natural gas stream	Donald N. Reed, Jr., Thomas L. Rodkey	1988-07-19	$12,086,000

E. Keith Mitchell — 2 Patents

Issued Patents All Time

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