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USPTO Patent Rankings Data through Dec 31, 2025
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Robert G. Knowlton — 2 Patents

CRCollaborative Research: 2 patents #7 of 22Top 35%
Lexington, MA: #1,366 of 2,299 inventorsTop 60%
Massachusetts: #42,563 of 88,656 inventorsTop 50%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Robert G. Knowlton has been granted 2 US patents while listed as an inventor at Collaborative Research. The first was granted in 1987 and the most recent in August 1992. Robert G. Knowlton ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Robert G. Knowlton in Lexington, MA, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5139936 Use of the GAL1 yeast promoter David Botstein, Ronald W. Davis, Gerald R. Fink, Alison Taunton-Rigby, Jen-I Mao +2 more 1992-08-18 $488,000
4661454 GAL1 yeast promoter linked to non galactokinase gene David Botstein, Ronald W. Davis, Gerald R. Fink, Alison Taunton-Rigby, Jen-I Mao +2 more 1987-04-28 $1,088,000