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USPTO Patent Rankings Data through Dec 31, 2025
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Leon E. Barstow — 4 Patents

PTProtein Technologies: 4 patents #2 of 21Top 10%
Tucson, AZ: #1,522 of 6,004 inventorsTop 30%
Arizona: #8,235 of 32,909 inventorsTop 30%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Leon E. Barstow has been granted 4 US patents while listed as an inventor at Protein Technologies. The first was granted in 1991 and the most recent in August 1993. Leon E. Barstow ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Leon E. Barstow in Tucson, AZ, US.

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5241048 Organic syntheses employing supercritical carbon dioxide as a reaction solvent Glen D. Ward, Milan Bier 1993-08-31 $224,000
5203368 Matrix of valves Anthony R. Ford, Terry D. Long, Glen D. Ward 1993-04-20 $244,000
5064940 Premixed dry reagent containing a protected amino acid and an activating agent for use in solid phase protein synthesis Glen D. Ward 1991-11-12
5001224 Organic syntheses employing supercritical carbon dioxide as a reaction solvent Glen D. Ward, Milan Bier 1991-03-19