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

Robert Charles Ladner

DYDyax: 85 patents #1 of 129Top 1%
PEProtein Engineering: 5 patents #1 of 6Top 20%
TLTakeda Pharmaceutical Company Limited: 4 patents #338 of 1,531Top 25%
GEGenex: 4 patents #3 of 45Top 7%
BSBracco Suisse Sa: 4 patents #28 of 63Top 45%
ELEnzon Labs: 3 patents #1 of 15Top 7%
SPSyntonix Pharmaceuticals: 2 patents #8 of 17Top 50%
MAMorphosys Ag: 1 patents #63 of 111Top 60%
ENEnzon: 1 patents #34 of 52Top 70%
Urbana, MD: #1 of 64 inventorsTop 2%
Maryland: #41 of 35,612 inventorsTop 1%
Overall (All Time): #12,671 of 4,157,543Top 1%
107 Patents All Time

Issued Patents All Time

Showing 76–100 of 107 patents

Patent #TitleCo-InventorsDate
6979538 Directed evolution of novel binding proteins Sonia Guterman, Bruce Lindsay Roberts, William Markland, Arthur C. Ley, Rachel Kent 2005-12-27
6953674 Inhibitors of human plasmin derived from the kunitz domains William Markland 2005-10-11
6919424 Binding peptides for carcinoembryonic antigen (CEA) Isaac J. Rondon 2005-07-19
6906176 Enterokinase cleavage sequences Arthur C. Ley, Christopher Luneau 2005-06-14
6774209 Binding peptides for carcinoembryonic antigen (CEA) Isaac J. Rondon 2004-08-10
6462172 Purification of tissue plasminogen activator (TPA) John Moore Maclennan, Thomas C. Ransohoff 2002-10-08
6423498 Variegated Kunitz domain peptide library and uses thereof William Markland 2002-07-23
6333402 "Kallikrein-binding ""Kunitz domain"" proteins and analogues thereof" William Markland 2001-12-25
6326155 Engineering affinity ligands for macromolecules John Moore Maclennan 2001-12-04
6103499 Inhibitors of human plasmin derived from the Kunitz domains William Markland 2000-08-15
6084062 Polypeptides that bind to tissue plasminogen activator (tPA) John Moore Maclennan, Thomas C. Ransohoff 2000-07-04
6071723 Inhibitors of human plasmin derived from the Kunitz domains William Markland 2000-06-06
6057287 "Kallikrein-binding ""Kunitz domain"" proteins and analogues thereof" William Markland 2000-05-02
6010880 Inhibitors of human plasmin derived from the kunitz domains William Markland 2000-01-04
5994125 "Kallikrein-inhibiting ""Kunitz Domain"" proteins and analogues thereof" Willaim Markland 1999-11-30
5837500 Directed evolution of novel binding proteins Sonia Kosow Gutterman, Bruce Lindsay Roberts, William Markland, Arthur C. Ley, Rachel Kent 1998-11-17
5795865 "Kallikrein-inhibiting ""kunitz domain"" proteins and analogues thereof" Willaim Markland 1998-08-18
5663143 Engineered human-derived kunitz domains that inhibit human neutrophil elastase Arthur C. Ley, Sonia Guterman, Bruce Lindsay Roberts, William Markland, Rachel Kent 1997-09-02
5571698 Directed evolution of novel binding proteins Sonia Guterman, Bruce Roberts, William Markland, Arthur C. Ley, Rachel Kent 1996-11-05
5534621 Immunoaffinity purification methods using single polypeptide chain binding molecules Robert E. Bird, Karl D. Hardman 1996-07-09
5518889 Immunoassay methods using single polypeptide chain binding molecules Robert E. Bird, Karl D. Hardman 1996-05-21
5455030 Immunotheraphy using single chain polypeptide binding molecules Robert E. Bird, Karl D. Hardman 1995-10-03
5403484 Viruses expressing chimeric binding proteins Sonia Guterman, Bruce Roberts, William Markland, Arthur C. Ley, Rachel Kent 1995-04-04
5260203 Single polypeptide chain binding molecules Robert E. Bird, Karl D. Hardman 1993-11-09
5223409 Directed evolution of novel binding proteins Sonia Guterman, Bruce Roberts, William Markland, Arthur C. Ley, Rachel Kent 1993-06-29