Robert L. Coffee — 3 Patents at Conoco

Robert L. Coffee has been granted 3 US patents while listed as an inventor at Conoco. The first was granted in 1985 and the most recent in July 1993. Robert L. Coffee ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Robert L. Coffee in Ponca City, OK, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
5224556	Downhole activated process and apparatus for deep perforation of the formation in a wellbore	Dennis R. Wilson	1993-07-06
4867237	Pressure monitoring apparatus	Dennis R. Wilson	1989-09-19
4527626	Process and apparatus for removing dissolved oxygen	Lisa A. Cantu, Marvin E. Yost, James E. Stolhand	1985-07-09

Robert L. Coffee — 3 Patents

Issued Patents All Time

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