John Mark Ritchey — 1 Patent at AT&T

John Mark Ritchey has been granted 1 US patent while listed as an inventor at AT&T. All of these patents were granted in 2005. John Mark Ritchey ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list John Mark Ritchey in Burlington, NC, US.

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Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
6937823	Method for preventing lasing in an optical ring network	John G. Israel, Gerard Lingner, III, Singanallur R. Thangavelu, William A. Thompson	2005-08-30	$12,304,000

John Mark Ritchey — 1 Patent

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