Inventor · disambiguated record
Richard D. Howells
Also filed as: HOWELLS RICHARD D
12 granted patents·885 citations·filing 1982–1995
94Inventor score
Top patents by PatentIndex Score
12 records- 0197US5874616APreparation of bis (fluoroalkylenesulfonyl) imides and (fluoroalkysulfony) (fluorosulfonyl) imidesMINNESOTA MINING & MFG·Filed 1995·Granted Feb 23, 1999·131 cites·8 claims
- 0297US5025052AFluorochemical oxazolidinonesMINNESOTA MINING & MFG·Filed 1990·Granted Jun 18, 1991·255 cites·13 claims
- 0396US4566981AFluorochemicals and fibrous substrates treated therewith: compositions of cationic and non-ionic fluorochemicalsMINNESOTA MINING & MFG·Filed 1984·Granted Jan 28, 1986·103 cites·15 claims
- 0495US4668726ACationic and non-ionic fluorochemicals and fibrous substrates treated therewithMINNESOTA MINING & MFG·Filed 1985·Granted May 26, 1987·82 cites·7 claims
- 0594US4533713AFluoroaliphaticsulfonamides containing oxirane groups and/or N-β-hydroxyalkylene groupsMINNESOTA MINING & MFG·Filed 1983·Granted Aug 6, 1985·35 cites·17 claims
- 0693US5099026AFluorochemical oxazolidinonesCRATER DAVIS H·Filed 1991·Granted Mar 24, 1992·125 cites·7 claims
- 0789US4540497AFluoroaliphatic radical-containing, substituted guanidines and fibrous substrates treated therewithMINNESOTA MINING & MFG·Filed 1982·Granted Sep 10, 1985·74 cites·17 claims
- 0885US4525423AFluorochemical copolymers and ovenable paperboard and textile fibers treated therewithMINNESOTA MINING & MFG·Filed 1982·Granted Jun 25, 1985·38 cites·3 claims
- 0975US4582882AFluorochemical copolymers and ovenable paperboard and textile fibers treated therewithMINNESOTA MINING & MFG·Filed 1985·Granted Apr 15, 1986·32 cites·14 claims
- 1068US4474982A1-Halomethyl-2-alkoxyethyl acrylates and methacrylatesMINNESOTA MINING & MFG·Filed 1982·Granted Oct 2, 1984·8 cites·10 claims
- 1142US4625069AFluorochemical rhodium compoundsMINNESOTA MINING & MFG·Filed 1985·Granted Nov 25, 1986·2 cites·12 claims
- 1233US4556720AFluorochemical rhodium compoundsMINNESOTA MINING & MFG·Filed 1983·Granted Dec 3, 1985·0 cites·9 claims
Join the waitlist — get patent alerts
Get an alert when Richard D. Howells files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →