John E. Tumblin — 7 Patents at Ivex

John E. Tumblin has been granted 7 US patents while listed as an inventor at Ivex. The first was granted in 1982 and the most recent in April 2016. John E. Tumblin ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list John E. Tumblin in Evanston, IL, US.

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
9324146	Photometric and radiometric calibration using optical feedback	Paul J. Olczak	2016-04-26
5142575	Method and apparatus for improving video scrambling and employing split sync pulses	James O. Farmer, Blair J. Schodowski, Joseph Graham Mobley, Gregory C. Cole, Robert O. Banker +1 more	1992-08-25	$2,598,000
4924498	Method and apparatus for improving video scrambling and employing split snyc pulses	James O. Farmer, Blair J. Schodowski, Joseph Graham Mobley, Gregory C. Cole, Robert O. Banker +1 more	1990-05-08	$4,184,000
4873585	Method of selectively retrieving video images from a video reproducer for simulating movement	Keith A. Blanton, William Mark Finlay, Michael J. Sinclair	1989-10-10
4807158	Method and apparatus for sampling images to simulate movement within a multidimensional space	Keith A. Blanton	1989-02-21
4752836	Method and apparatus for reproducing video images to simulate movement within a multi-dimensional space	Keith A. Blanton, William Mark Finlay, Michael J. Sinclair	1988-06-21
4321853	Automatic ear training apparatus	—	1982-03-30

John E. Tumblin — 7 Patents

Issued Patents All Time

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