Hideki Umehara

Person

Kanagawa-ken, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical information recording medium and composition for optical in...
- Patent number RE38979
- Issue date Feb 14, 2006
- Mitsui Chemicals, Inc.
- Tadashi Koike
- 428 - Stock material or miscellaneous articles
Information Patent Grant
Dipyrromethene metal chelate compounds
- Patent number 6,060,606
- Issue date May 9, 2000
- Mitsui Chemicals, Inc.
- Tsutami Misawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Optical recording medium
- Patent number 5,948,593
- Issue date Sep 7, 1999
- Mitsui Chemicals, Inc.
- Tsutami Misawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Optical information recording medium and composition for optical in...
- Patent number 5,876,820
- Issue date Mar 2, 1999
- Mitsui Chemicals, Inc.
- Tadashi Koike
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical recording medium
- Patent number 5,855,979
- Issue date Jan 5, 1999
- Mitsui Chemicals, Inc.
- Hideki Umehara
- G11 - INFORMATION STORAGE
Information Patent Grant
Phthalocyanine compound and optical recording medium containing it
- Patent number 5,750,229
- Issue date May 12, 1998
- Mitsui Toatsu Chemicals, Inc.
- Takahisa Oguchi
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Optical recording media
- Patent number 5,696,758
- Issue date Dec 9, 1997
- Mitsui Toatsu Chemicals, Inc.
- Masatoshi Yanagimachi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical recording medium
- Patent number 5,672,462
- Issue date Sep 30, 1997
- Mitsui Toatsu Chemicals, Inc.
- Keisuke Takuma
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Optical recording media
- Patent number 5,658,707
- Issue date Aug 19, 1997
- Mitsui Toatsu Chemicals, Inc.
- Keisuke Takuma
- G11 - INFORMATION STORAGE
Information Patent Grant
Phthalocyanine compound and optical recording medium containing it
- Patent number 5,646,273
- Issue date Jul 8, 1997
- Mitsui Toatsu Chemicals, Inc.
- Takahisa Oguchi
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Optical recording media and a method of recording and reproducing i...
- Patent number 5,633,106
- Issue date May 27, 1997
- Mitsui Toatsu Chemicals, Inc.
- Shin Aihara
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical information recording medium and composition for optical in...
- Patent number 5,492,744
- Issue date Feb 20, 1996
- Mitsui Toatsu Chemicals Incorporated
- Tadashi Koike
- G11 - INFORMATION STORAGE
Information Patent Grant
Phthalocyanine and naphthalocyanine light-absorbing compound and op...
- Patent number 5,446,142
- Issue date Aug 29, 1995
- Mitsui Toatsu Chemicals, Inc.
- Hisato Itoh
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Ferromagnetic metal particles and preparation process thereof
- Patent number 5,188,898
- Issue date Feb 23, 1993
- Mitsui Toatsu Chemicals, Incorporated
- Kimiteru Tagawa
- G11 - INFORMATION STORAGE

Hideki Umehara

Person

Patents Grantslast 30 patents

Optical information recording medium and composition for optical in...

Dipyrromethene metal chelate compounds

Optical recording medium

Optical information recording medium and composition for optical in...

Optical recording medium

Phthalocyanine compound and optical recording medium containing it

Optical recording media

Optical recording medium

Optical recording media

Phthalocyanine compound and optical recording medium containing it

Optical recording media and a method of recording and reproducing i...

Optical information recording medium and composition for optical in...

Phthalocyanine and naphthalocyanine light-absorbing compound and op...

Ferromagnetic metal particles and preparation process thereof