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USPTO Patent Rankings Data through Dec 31, 2025
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Raymond T. Cunningham — 4 Patents

COCortech: 2 patents #9 of 29Top 35%
NCNalco Chemical: 2 patents #326 of 636Top 55%
Houston, TX: #5,436 of 21,073 inventorsTop 30%
Texas: #33,915 of 125,132 inventorsTop 30%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Raymond T. Cunningham has been granted 4 US patents while listed as an inventor at Cortech. The first was granted in 1993 and the most recent in May 1998. Raymond T. Cunningham ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Raymond T. Cunningham in Houston, TX, US.

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5750070 Use of biodegradable polymers in preventing corrosion and scale build-up Jiansheng Tang, Bo Yang 1998-05-12 $3,399,000
5376159 Corrosion inhibitor for nitrogen fertilizer solutions Kristen Moore 1994-12-27 $10,617,000
5314910 Ester inhibitors Gary P. Kirschenheuter, John C. Cheronis 1994-05-24 $3,428,000
5240956 Ester inhibitors Gary P. Kirschenheuter, John C. Cheronis 1993-08-31 $4,309,000