Kiyohumi Takeuchi

Person

Toyko, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Cyclic hydrocarbon derivative and liquid crystal composition contai...
- Patent number 5,536,443
- Issue date Jul 16, 1996
- Dainippon Ink and Chemicals, Inc.
- Haruyoshi Takatsu
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Cyclic hydrocarbon derivative and liquid crystal composition contai...
- Patent number 5,474,707
- Issue date Dec 12, 1995
- Dainippon Ink and Chemicals, Inc.
- Haruyoshi Takatsu
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Cyclohexane derivatives
- Patent number 5,321,169
- Issue date Jun 14, 1994
- Dainippon Ink and Chemicals, Inc.
- Yasuyuki Tanaka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Liquid crystal devices and process for producing the same
- Patent number 5,304,323
- Issue date Apr 19, 1994
- Dainippon Ink and Chemicals, Inc.
- Yoshi Arai
- G02 - OPTICS
Information Patent Grant
Fluorine-substituted cyclohexylcyclohexene derivative
- Patent number 5,089,629
- Issue date Feb 18, 1992
- Dainippon Ink and Chemicals, Inc.
- Yasuyuki Tanaka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Optically active tolan derivatives
- Patent number 4,961,874
- Issue date Oct 9, 1990
- Dainippon Ink and Chemicals, Inc.
- Kiyohumi Takeuchi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Cyclohexene derivatives
- Patent number 4,946,986
- Issue date Aug 7, 1990
- Dainippon Ink and Chemicals
- Yasuyuki Tanaka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Fluorine-substituted cyclohexylcyclohexene derivative
- Patent number 4,910,350
- Issue date Mar 20, 1990
- Dainippon Ink and Chemicals, Inc.
- Yasuyuki Tanaka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Optically active pyridines useful in liquid crystal form for electr...
- Patent number 4,880,936
- Issue date Nov 14, 1989
- Dainippon Ink and Chemicals, Inc.
- Makoto Sasaki
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Nematic liquid crystal compound of four ring systems
- Patent number 4,814,523
- Issue date Mar 21, 1989
- Dainippon Ink and Chemicals, Inc.
- Yasuyuki Tanaka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Novel optically active tolan derivatives
- Patent number 4,814,516
- Issue date Mar 21, 1989
- Dainippon Ink and Chemicals, Inc.
- Kiyohumi Takeuchi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Optically active benzoic ester derivatives
- Patent number 4,764,636
- Issue date Aug 16, 1988
- Dainippon Ink and Chemicals, Inc.
- Makoto Sasaki
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Optically active tolan derivative
- Patent number 4,754,051
- Issue date Jun 28, 1988
- Dainippon Ink and Chemicals, Inc.
- Makoto Sasaki
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Cyclohexylcyclohexene derivatives
- Patent number 4,698,177
- Issue date Oct 6, 1987
- Dainippon Ink and Chemicals, Inc.
- Yasuyuki Tanaka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Nematic liquid crystalline composition
- Patent number 4,670,182
- Issue date Jun 2, 1987
- Dainippon Ink and Chemicals, Inc.
- Yutaka Fujita
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
4-substituted phenyl crotyl ether derivative
- Patent number 4,654,421
- Issue date Mar 31, 1987
- Dainippon Ink and Chemicals, Inc.
- Yasuyuki Tanaka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
1-Cyclohexyl-2-cyclohexylphenylethane derivatives
- Patent number 4,393,258
- Issue date Jul 12, 1983
- Dainippon Mk & Chemicals Inc.
- Hisato Sato
- C07 - ORGANIC CHEMISTRY

Kiyohumi Takeuchi

Person

Patents Grantslast 30 patents

Cyclic hydrocarbon derivative and liquid crystal composition contai...

Cyclic hydrocarbon derivative and liquid crystal composition contai...

Cyclohexane derivatives

Liquid crystal devices and process for producing the same

Fluorine-substituted cyclohexylcyclohexene derivative

Optically active tolan derivatives

Cyclohexene derivatives

Fluorine-substituted cyclohexylcyclohexene derivative

Optically active pyridines useful in liquid crystal form for electr...

Nematic liquid crystal compound of four ring systems

Novel optically active tolan derivatives

Optically active benzoic ester derivatives

Optically active tolan derivative

Cyclohexylcyclohexene derivatives

Nematic liquid crystalline composition

4-substituted phenyl crotyl ether derivative

1-Cyclohexyl-2-cyclohexylphenylethane derivatives