William A. Huffman

Person

Minneapolis, MN, US

People

Patents Grantslast 30 patents

Information Patent Grant
Polymer-dispersed liquid crystal device having an ultraviolet-polym...
- Patent number 5,867,238
- Issue date Feb 2, 1999
- Minnesota Mining and Manufacturing Company
- Stephen A. Miller
- G02 - OPTICS
Information Patent Grant
Antistatic x-ray intensifying screen comprising sulfonyl methide an...
- Patent number 5,626,957
- Issue date May 6, 1997
- Minnesota Mining and Manufacturing Company
- Paolo Benso
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Grant
Silver halide photographic material having improved antistatic prop...
- Patent number 5,541,049
- Issue date Jul 30, 1996
- Minnesota Mining and Manufacturing Company
- Dario Ballerini
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Antistatic film bases and their process of manufacturing
- Patent number 5,238,706
- Issue date Aug 24, 1993
- Minnesota Mining and Manufacturing Company
- William A. Huffman
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Antistatic coatings
- Patent number 5,213,887
- Issue date May 25, 1993
- Minnesota Mining and Manufacturing Company
- William A. Huffman
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Pleochroic dyes and electro-optical displays therewith
- Patent number 4,702,561
- Issue date Oct 27, 1987
- Minnesota Mining and Manufacturing Company
- William A. Huffman
- G02 - OPTICS
Information Patent Grant
Asymmetric dichroic dye molecules having poly(arylazo) linking grou...
- Patent number 4,565,424
- Issue date Jan 21, 1986
- Minnesota Mining and Manufacturing Company
- William A. Huffman
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Substituted anthraquinone-type isotropic dyes for liquid crystal di...
- Patent number 4,530,572
- Issue date Jul 23, 1985
- Minnesota Mining and Manufacturing Company
- William A. Huffman
- G02 - OPTICS
Information Patent Grant
Helichromic-smectic liquid crystal compositions and display cells
- Patent number 4,514,045
- Issue date Apr 30, 1985
- Minnesota Mining and Manufacturing Company
- William A. Huffman
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Substituted anthracene-type isotropic dyes for liquid crystal displ...
- Patent number 4,452,511
- Issue date Jun 5, 1984
- Minnesota Mining and Manufacturing Company
- William A. Huffman
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Cycloalkyl-type isotropic dyes for liquid crystal display devices
- Patent number 4,448,492
- Issue date May 15, 1984
- Minnesota Mining and Manufacturing Company
- William A. Huffman
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Helichromic compounds and displays
- Patent number 4,394,070
- Issue date Jul 19, 1983
- Minnesota Mining and Manufacturing Company
- Harvey A. Brown
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Liquid crystal compositions containing pleochroic dye
- Patent number 4,232,949
- Issue date Nov 11, 1980
- Minnesota Mining and Manufacturing Company
- William A. Huffman
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Semiconductive and sensitized photoconductive compositions
- Patent number 4,222,902
- Issue date Sep 16, 1980
- Minnesota Mining and Manufacturing Company
- William A. Huffman
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Inhibitor removing bath for direct positive color photographic deve...
- Patent number 4,194,911
- Issue date Mar 25, 1980
- Minnesota Mining and Manufacturing Company
- William A. Huffman
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Anthraquinone amino pleochroic dyes
- Patent number 4,154,746
- Issue date May 15, 1979
- Minnesota Mining and Manufacturing Company
- William A. Huffman
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Semiconductive and sensitized photoconductive compositions
- Patent number 4,134,764
- Issue date Jan 16, 1979
- Minnesota Mining and Manufacturing Company
- William A. Huffman
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electro-optical devices containing methine arylidene dyes
- Patent number 4,105,299
- Issue date Aug 8, 1978
- Minnesota Mining and Manufacturing Company
- William A. Huffman
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Semiconductive and sensitized photoconductive compositions
- Patent number 4,052,209
- Issue date Oct 4, 1977
- Minnesota Mining and Manufacturing Company
- William A. Huffman
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

William A. Huffman

Person

Patents Grantslast 30 patents

Polymer-dispersed liquid crystal device having an ultraviolet-polym...

Antistatic x-ray intensifying screen comprising sulfonyl methide an...

Silver halide photographic material having improved antistatic prop...

Antistatic film bases and their process of manufacturing

Antistatic coatings

Pleochroic dyes and electro-optical displays therewith

Asymmetric dichroic dye molecules having poly(arylazo) linking grou...

Substituted anthraquinone-type isotropic dyes for liquid crystal di...

Helichromic-smectic liquid crystal compositions and display cells

Substituted anthracene-type isotropic dyes for liquid crystal displ...

Cycloalkyl-type isotropic dyes for liquid crystal display devices

Helichromic compounds and displays

Liquid crystal compositions containing pleochroic dye

Semiconductive and sensitized photoconductive compositions

Inhibitor removing bath for direct positive color photographic deve...

Anthraquinone amino pleochroic dyes

Semiconductive and sensitized photoconductive compositions

Electro-optical devices containing methine arylidene dyes

Semiconductive and sensitized photoconductive compositions