Yasuyuki Yamada

Person

Ohmuta, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Hydrazones and electrophotographic photoreceptors comprising them
- Patent number 5,235,104
- Issue date Aug 10, 1993
- Mitsui Toatsu Chemicals, Incorporated
- Yasuyuki Yamada
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Hydrozones and electrophotographic photoreceptors comprising them
- Patent number 5,132,190
- Issue date Jul 21, 1992
- Mitsui Toatsu Chemicals Incorporated
- Yasuyuki Yamada
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
P-amino substituted tetraphenylthiophenes and electrophotographic p...
- Patent number 5,023,343
- Issue date Jun 11, 1991
- Mitsui Toatsu Chemicals, Incorporated
- Eishi Tanaka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
P-amino substituted tetraphenylthiophenes and electrophotographic p...
- Patent number 4,963,449
- Issue date Oct 16, 1990
- Mitsui Toatsu Chemicals, Incorporated
- Eishi Tanaka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Colored polarizing film and method of making same
- Patent number 4,842,781
- Issue date Jun 27, 1989
- Mitsui Toatsu Chemicals, Inc.
- Tsutomu Nishizawa
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Electrophotographic receptors with charge generating azo-substitute...
- Patent number 4,808,503
- Issue date Feb 28, 1989
- Mitsui Toatsu Chemicals, Incorporated
- Yasuyuki Yamada
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photoreceptor 2-Phenyl-benzooxazole bisazo based
- Patent number 4,808,507
- Issue date Feb 28, 1989
- Mitsui Toatsu Chemicals, Incorporated
- Yasuyuki Yamada
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Dichroic azo dyestuffs and liquid crystal composition containing sa...
- Patent number 4,734,218
- Issue date Mar 29, 1988
- Mitsui Toatsu Chemicals, Incorporated
- Keisuke Takuma
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Composition for liquid crystal color display
- Patent number 4,555,355
- Issue date Nov 26, 1985
- Mitsui Toatsu Chemicals, Inc.
- Yasuyuki Yamada
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Dichroic dye and liquid crystalline composition for color display
- Patent number 4,552,684
- Issue date Nov 12, 1985
- Mitsui Toatsu Chemicals, Inc.
- Yasuyuki Yamada
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Composition for liquid crystal color display
- Patent number 4,459,218
- Issue date Jul 10, 1984
- Mitsui Toatsu Chemicals, Inc.
- Yasuyuki Yamada
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Yasuyuki Yamada

Person

Patents Grantslast 30 patents

Hydrazones and electrophotographic photoreceptors comprising them

Hydrozones and electrophotographic photoreceptors comprising them

P-amino substituted tetraphenylthiophenes and electrophotographic p...

P-amino substituted tetraphenylthiophenes and electrophotographic p...

Colored polarizing film and method of making same

Electrophotographic receptors with charge generating azo-substitute...

Electrophotographic photoreceptor 2-Phenyl-benzooxazole bisazo based

Dichroic azo dyestuffs and liquid crystal composition containing sa...

Composition for liquid crystal color display

Dichroic dye and liquid crystalline composition for color display

Composition for liquid crystal color display