Rihoko Imai

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Azo compound and polarizing film
- Patent number 5,952,477
- Issue date Sep 14, 1999
- Mitsui Chemicals, Inc.
- Tsutami Misawa
- G02 - OPTICS
Information Patent Grant
Quinophthalone compounds and polarizing films using same
- Patent number 5,750,599
- Issue date May 12, 1998
- Mitsui Toatsu Chemicals, Inc.
- Akira Ogiso
- G02 - OPTICS
Information Patent Grant
Color filter having polarizability
- Patent number 5,751,483
- Issue date May 12, 1998
- Mitsui Toatsu Chemicals, Inc.
- Hisato Itoh
- G02 - OPTICS
Information Patent Grant
Water-soluble azo compounds
- Patent number 5,739,298
- Issue date Apr 14, 1998
- Mitsui Toatsu Chemicals, Inc.
- Tsutami Misawa
- G02 - OPTICS
Information Patent Grant
Azo compounds and polarizing films using the compounds
- Patent number 5,698,682
- Issue date Dec 16, 1997
- Mitsui Toatsu Chemicals, Inc.
- Yoriaki Matsuzaki
- G02 - OPTICS
Information Patent Grant
Quinophthalone compounds
- Patent number 5,659,039
- Issue date Aug 19, 1997
- Mitsui Toatsu Chemicals, Inc.
- Akira Ogiso
- G02 - OPTICS
Information Patent Grant
Azo compounds and polarizing films using the compounds
- Patent number 5,639,809
- Issue date Jun 17, 1997
- Mitsui Toatsu Chemicals, Inc.
- Yoriaki Matsuzaki
- G02 - OPTICS
Information Patent Grant
Polarizing film of a hydrophilic polymer film containing a novel az...
- Patent number 5,618,868
- Issue date Apr 8, 1997
- Mitsui Toatsu Chemicals, Inc.
- Tsutami Misawa
- G02 - OPTICS
Information Patent Grant
Water-soluble azo compounds
- Patent number 5,548,073
- Issue date Aug 20, 1996
- Mitsui Toatsu Chemicals, Inc.
- Tsutami Misawa
- G02 - OPTICS
Information Patent Grant
Benzopyran compound and use of the same
- Patent number 5,482,986
- Issue date Jan 9, 1996
- Mitsui Toatsu Chemicals, Inc.
- Akira Ogiso
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Sulfonyloxy substituted tris-azoaryl dyes and copper complex salts...
- Patent number 5,446,135
- Issue date Aug 29, 1995
- Mitsui Toatsu Chemicals, Inc.
- Tsutami Misawa
- G02 - OPTICS
Information Patent Grant
Water-soluble azo compounds and polarizing films using the compounds
- Patent number 5,423,100
- Issue date Jun 13, 1995
- Mitsui Toatsu Chemicals, Inc.
- Tsutami Misawa
- G02 - OPTICS
Information Patent Grant
Water-soluble azo dyes and polarizing films using the dyes
- Patent number 5,318,856
- Issue date Jun 7, 1994
- Mitsui Toatsu Chemicals, Incorporated
- Tsutami Misawa
- G02 - OPTICS

Rihoko Imai

Person

Patents Grantslast 30 patents

Azo compound and polarizing film

Quinophthalone compounds and polarizing films using same

Color filter having polarizability

Water-soluble azo compounds

Azo compounds and polarizing films using the compounds

Quinophthalone compounds

Azo compounds and polarizing films using the compounds

Polarizing film of a hydrophilic polymer film containing a novel az...

Water-soluble azo compounds

Benzopyran compound and use of the same

Sulfonyloxy substituted tris-azoaryl dyes and copper complex salts...

Water-soluble azo compounds and polarizing films using the compounds

Water-soluble azo dyes and polarizing films using the dyes