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

Steven J. Hamrock

3M: 67 patents #79 of 11,543Top 1%
HYHydro-Quebec: 1 patents #211 of 463Top 50%
Stillwater, MN: #12 of 719 inventorsTop 2%
Minnesota: #485 of 52,454 inventorsTop 1%
Overall (All Time): #31,099 of 4,157,543Top 1%
68 Patents All Time

Issued Patents All Time

Showing 51–68 of 68 patents

Patent #TitleCo-InventorsDate
6863838 Zwitterionic imides 2005-03-08
6833412 Acid functional fluoropolymer membranes and method of manufacture Naiyong Jing, Shane Mao, L. Charles Hardy 2004-12-21
6780472 Floor finish compositions Fidelis C. Onwumere, Bradford B. Wright, Michael A. Yandrasits 2004-08-24
6727386 Aromatic imide and aromatic methylidynetrissulfonyl compounds and method of making 2004-04-27
6683209 Aromatic imide and aromatic methylidynetrissulfonyl compounds and method of making 2004-01-27
6649295 Membrane electrode assembly having annealed polymer electrolyte membrane John Lewin, Shane Mao 2003-11-18
6423784 Acid functional fluoropolymer membranes and method of manufacture Naiyong Jing, Shane Mao, L. Charles Hardy 2002-07-23
6420607 Cationically polymerizable compositions capable of being coated by electrostatic assistance Phat T. Pham 2002-07-16
6350545 Sulfonylimide compounds Alan D. Fanta, Phat T. Pham 2002-02-26
6316149 Solid polymer electrolyte compositions James E. Garbe, Radoslav Atanasoski, Dinh Ba Le 2001-11-13
6277512 Polymer electrolyte membranes from mixed dispersions David A. Ylitalo 2001-08-21
6197844 Floor finish compositions Fidelis C. Onwumere, Bradford B. Wright, Michael A. Yandrasits 2001-03-06
6090895 Crosslinked ion conductive membranes Shane Mao, David A. Ylitalo 2000-07-18
6063522 Electrolytes containing mixed fluorochemical/hydrocarbon imide and methide salts Phat T. Pham 2000-05-16
5908663 Topical carpet treatment Shou-Lu G. Wang, Lori P. Engle, Dong-Wei Zhu, Thomas E. Wood, Steven J. Martin 1999-06-01
5888290 Composition and process for imparting durable repellency to substrates Lori P. Engle, Mark J. Pellerite 1999-03-30
5760126 Aqueous fluorochemical compositions and abrasion-resistant coatings therefrom Lori P. Engle, George G. I. Moore, Mark J. Pellerite, Dong-Wei Zhu 1998-06-02
5514493 Perfluoroalkylsulfonates, sulfonimides, and sulfonyl methides, and electrolytes containing them Jennifer E. Waddell, William M. Lamanna, Larry J. Krause, George G. I. Moore 1996-05-07