Richard D. Howells

Person

St. Paul, MN, US

People

Patents Grantslast 30 patents

Information Patent Grant
Preparation of bis (fluoroalkylenesulfonyl) imides and (fluoroalkys...
- Patent number 5,874,616
- Issue date Feb 23, 1999
- Minnesota Mining and Manufacturing Company
- Richard D. Howells
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Fluorochemical oxazolidinones
- Patent number 5,099,026
- Issue date Mar 24, 1992
- Davis H. Crater
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Fluorochemical oxazolidinones
- Patent number 5,025,052
- Issue date Jun 18, 1991
- Minnesota Mining and Manufacturing Company
- Davis H. Crater
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Cationic and non-ionic fluorochemicals and fibrous substrates treat...
- Patent number 4,668,726
- Issue date May 26, 1987
- Minnesota Mining and Manufacturing Company
- Richard D. Howells
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Fluorochemical rhodium compounds
- Patent number 4,625,069
- Issue date Nov 25, 1986
- Minnesota Mining and Manufacturing
- Allen R. Siedle
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Fluorochemical copolymers and ovenable paperboard and textile fiber...
- Patent number 4,582,882
- Issue date Apr 15, 1986
- Minnesota Mining and Manufacturing Company
- Michael M. Lynn
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Fluorochemicals and fibrous substrates treated therewith: compositi...
- Patent number 4,566,981
- Issue date Jan 28, 1986
- Minnesota Mining and Manufacturing Company
- Richard D. Howells
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Fluorochemical rhodium compounds
- Patent number 4,556,720
- Issue date Dec 3, 1985
- Minnesota Mining and Manufacturing Company
- Allen R. Siedle
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Fluoroaliphatic radical-containing, substituted guanidines and fibr...
- Patent number 4,540,497
- Issue date Sep 10, 1985
- Minnesota Mining and Manufacturing Company
- John C. Chang
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Fluoroaliphaticsulfonamides containing oxirane groups and/or N-.bet...
- Patent number 4,533,713
- Issue date Aug 6, 1985
- Minnesota Mining and Manufacturing Company
- Richard D. Howells
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Fluorochemical copolymers and ovenable paperboard and textile fiber...
- Patent number 4,525,423
- Issue date Jun 25, 1985
- Minnesota Mining and Manufacturing Company
- Michael M. Lynn
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
1-Halomethyl-2-alkoxyethyl acrylates and methacrylates
- Patent number 4,474,982
- Issue date Oct 2, 1984
- Minnesota Mining and Manufacturing Company
- Richard D. Howells
- C07 - ORGANIC CHEMISTRY

Richard D. Howells

Person

Patents Grantslast 30 patents

Preparation of bis (fluoroalkylenesulfonyl) imides and (fluoroalkys...

Fluorochemical oxazolidinones

Fluorochemical oxazolidinones

Cationic and non-ionic fluorochemicals and fibrous substrates treat...

Fluorochemical rhodium compounds

Fluorochemical copolymers and ovenable paperboard and textile fiber...

Fluorochemicals and fibrous substrates treated therewith: compositi...

Fluorochemical rhodium compounds

Fluoroaliphatic radical-containing, substituted guanidines and fibr...

Fluoroaliphaticsulfonamides containing oxirane groups and/or N-.bet...

Fluorochemical copolymers and ovenable paperboard and textile fiber...

1-Halomethyl-2-alkoxyethyl acrylates and methacrylates