Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
RB

Richard A. Berg — 54 Patents

CTCohesion Technologies: 14 patents #1 of 40Top 3%
COCollagen: 11 patents #10 of 84Top 15%
FZFziomed: 6 patents #3 of 11Top 30%
STStimlabs: 4 patents #3 of 4Top 75%
VEVerax: 3 patents #4 of 9Top 45%
PHPharming: 3 patents #1 of 13Top 8%
IPIncyte Pharmaceuticals: 2 patents #57 of 137Top 45%
APAngiotech Pharmaceuticals: 2 patents #11 of 39Top 30%
AGAngiodevice International Gmbh: 2 patents #8 of 12Top 70%
PBPharming Intellectual Property B.V.: 1 patents #7 of 25Top 30%
Arroyo Grande, CA: #5 of 174 inventorsTop 3%
California: #6,949 of 386,348 inventorsTop 2%
Overall (All Time): #47,323 of 4,157,543Top 2%
54 Patents All Time

Issued Patents All Time

Showing 26–50 of 54 patents

Patent #TitleCo-InventorsDate
5962648 Production of human recombinant collagen in the milk of transgenic mammals 1999-10-05
5945101 Skin model system Jeffrey C. Geesin 1999-08-31
5895833 Production of human recombinant collagen in the milk of transgenic animals 1999-04-20
5888248 Dermal-epidermal in vitro test system Jeffrey C. Geesin 1999-03-30
5874500 Crosslinked polymer compositions and methods for their use Woonza M. Rhee, Frank DeLustro 1999-02-23
5807581 Collagen-based injectable drug delivery system and its use Joel Rosenblatt 1998-09-15
5800541 Collagen-synthetic polymer matrices prepared using a multiple step reaction Woonza M. Rhee 1998-09-01
5755814 Dermal-epidermal in vitro test system Jeffrey C. Geesin 1998-05-26
5752974 Injectable or implantable biomaterials for filling or blocking lumens and voids of the body Woonza M. Rhee, George H. Chu, Frank DeLustro, Dan Marshall Jolivette, Kimberly A. McCullough 1998-05-19
5667839 Human recombinant collagen in the milk of transgenic animals 1997-09-16
5643464 Process for preparing a sterile, dry crosslinking agent Woonza M. Rhee, Joel Rosenblatt, Jacqueline A. Schroeder, Larry J. Braga, Thomas L. Smestad +1 more 1997-07-01
5550187 Method of preparing crosslinked biomaterial compositions for use in tissue augmentation Woonza M. Rhee, Joel Rosenblatt, Jacqueline A. Tefft, Larry J. Braga, Thomas L. Smestad 1996-08-27
5527856 Method of preparing crosslinked biomaterial compositions for use in tissue augmentation Woonza M. Rhee, Joel Rosenblatt, Jacqueline A. Tefft, Larry J. Braga, Thomas L. Smestad 1996-06-18
5510121 Glycosaminoglycan-synthetic polymer conjugates Woonza M. Rhee 1996-04-23
5510418 Glycosaminoglycan-synthetic polymer conjugates Woonza M. Rhee 1996-04-23
5476666 Glycosaminoglycan-synthetic polymer conjugates Woonza M. Rhee 1995-12-19
5475052 Collagen-synthetic polymer matrices prepared using a multiple step reaction Woonza M. Rhee 1995-12-12
5470911 Glycosaminoglycan-synthetic polymer conjugates Woonza M. Rhee 1995-11-28
5196196 Use of protease nexin-I in wound dressings Randy W. Scott 1993-03-23
5112608 Use of protease nexin-I to mediate wound healing Randy W. Scott 1992-05-12
4997753 Weighted collagen microsponge for immobilizing bioactive material Robert C. Dean, Jr., Frederick H. Silver, Philip G. Phillips, Peter W. Runstadler, Jr. 1991-03-05
4971954 Collagen-based matrices ribose cross-linked Barbara Brodsky, Gad Avigad, Eric Eikenberry, Manoj Jain, Shizuko Tanaka 1990-11-20
4970298 Biodegradable matrix and methods for producing same Frederick H. Silver, Charles J. Doillon, Kevin Weadock, Conrad Whyne 1990-11-13
4925924 Biocompatible synthetic and collagen compositions having a dual-type porosity for treatment of wounds and pressure ulcers and therapeutic methods thereof Frederick H. Silver, Charles J. Doillon, Arkady Chernomorsky, Robert M. Olson 1990-05-15
4863856 Weighted collagen microsponge for immobilizing bioactive materials Robert C. Dean, Jr., Frederick H. Silver, Philip G. Phillips, Peter W. Runstadler, Jr., Gennaro J. Maffia 1989-09-05