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USPTO Patent Rankings Data through Dec 31, 2025
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Bruce Pratt — 3 Patents

COCollagen: 3 patents #26 of 84Top 35%
Union City, CA: #480 of 1,177 inventorsTop 45%
California: #150,760 of 386,348 inventorsTop 40%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Bruce Pratt has been granted 3 US patents while listed as an inventor at Collagen. The first was granted in 1991 and the most recent in June 1993. Bruce Pratt ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Bruce Pratt in Union City, CA, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5219576 Collagen wound healing matrices and process for their production George H. Chu, Yasushi Ogawa, John M. McPherson, George Ksander, Diana Hendricks +1 more 1993-06-15 $3,120,000
5110604 Processes for producing collagen matrixes and methods of using same George H. Chu, Yasushi Ogawa, John M. McPherson, George Ksander, Diana Hendricks +1 more 1992-05-05 $3,231,000
5024841 Collagen wound healing matrices and process for their production George H. Chu, Yasushi Ogawa, John M. McPherson, George Ksander, Diana Hendricks +1 more 1991-06-18 $3,987,000