RH

Richard D. Howells

3M: 11 patents #1,441 of 11,543Top 15%
Overall (All Time): #428,470 of 4,157,543Top 15%
12
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5874616 Preparation of bis (fluoroalkylenesulfonyl) imides and (fluoroalkysulfony) (fluorosulfonyl) imides William M. Lamanna, Alan D. Fanta, Jennifer E. Waddell 1999-02-23
5099026 Fluorochemical oxazolidinones Davis H. Crater, Richard M. Stern, John A. Temperante 1992-03-24
5025052 Fluorochemical oxazolidinones Davis H. Crater, Richard M. Stern, John A. Temperante 1991-06-18
4668726 Cationic and non-ionic fluorochemicals and fibrous substrates treated therewith 1987-05-26
4625069 Fluorochemical rhodium compounds Allen R. Siedle 1986-11-25
4582882 Fluorochemical copolymers and ovenable paperboard and textile fibers treated therewith Michael M. Lynn 1986-04-15
4566981 Fluorochemicals and fibrous substrates treated therewith: compositions of cationic and non-ionic fluorochemicals 1986-01-28
4556720 Fluorochemical rhodium compounds Allen R. Siedle 1985-12-03
4540497 Fluoroaliphatic radical-containing, substituted guanidines and fibrous substrates treated therewith John C. H. Chang 1985-09-10
4533713 Fluoroaliphaticsulfonamides containing oxirane groups and/or N-.beta.-hydroxyalkylene groups 1985-08-06
4525423 Fluorochemical copolymers and ovenable paperboard and textile fibers treated therewith Michael M. Lynn 1985-06-25
4474982 1-Halomethyl-2-alkoxyethyl acrylates and methacrylates 1984-10-02