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

David James Schreck

UTUnivation Technologies: 22 patents #27 of 289Top 10%
UTUnion Carbide Chemicals & Plastics Technology: 17 patents #24 of 701Top 4%
IBIowa Corn Promotion Board: 8 patents #1 of 29Top 4%
TTT.En Process Technology: 4 patents #2 of 30Top 7%
Dow Global Technologies: 3 patents #1,458 of 4,534Top 35%
UCUnion Carbide: 3 patents #288 of 1,402Top 25%
Lake City, MN: #1 of 31 inventorsTop 4%
Minnesota: #643 of 52,454 inventorsTop 2%
Overall (All Time): #40,261 of 4,157,543Top 1%
59 Patents All Time

Issued Patents All Time

Showing 51–59 of 59 patents

Patent #TitleCo-InventorsDate
5202490 Process for thr manufacture of diethylenetriamine and aminoethylethanolamine Lloyd M. Burgess, Charles A. Gibson 1993-04-13
5196588 Ethylenediamine and diethylenetriamine producers composition and method for producing same Lloyd M. Burgess, Charles A. Gibson 1993-03-23
5101074 Vicinal di(hetro) alkylene organometalates and processes for the production of amines therewith Stephen W. King, Arthur R. Doumaux, Jr., George A. Skoler 1992-03-31
5026907 Production of carboxylic acids from alcohols using rhodium complex catalysts and organic ester source Richard W. Wegman 1991-06-25
4983736 Amines catalysis using metallic polyphosphate condensation catalysts having a condensed structure Arthur R. Doumaux, Jr. 1991-01-08
4902777 N-(polyoxyalkyl)-n-(alkyl)amines Richard M. Gerkin, Danny E. Smith 1990-02-20
4421939 Production of ethanol from acetic acid Ben W. Kiff 1983-12-20
4399305 Production of ethylene by the pyrolysis of ethyl acetate 1983-08-16
4357440 Wet-adhesion aid 1982-11-02