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USPTO Patent Rankings Data through Dec 31, 2025
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Roger D. Calhoon — 2 Patents

CECetus: 1 patents #118 of 213Top 60%
WNWeyerhaeuser Nr: 1 patents #274 of 578Top 50%
Concord, CA: #289 of 739 inventorsTop 40%
California: #187,151 of 386,348 inventorsTop 50%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Roger D. Calhoon has been granted 2 US patents while listed as an inventor at Cetus. The first was granted in 1993 and the most recent in June 1998. Roger D. Calhoon ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Roger D. Calhoon in Concord, CA, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5759828 Cyclic di-guanylate metabolic enzymes Rony Tal, David H. Gelfand, Arie Ben-Bassat, Moshe Benziman, Hing C. Wong 1998-06-02 $71,775,000
5268274 Methods and nucleic acid sequences for the expression of the cellulose synthase operon Arie Ben-Bassat, Anna Lisa Fear, David H. Gelfand, James H. Meade, Rony Tal +2 more 1993-12-07