Toru Yashiro

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical recording medium and method of information recording/readin...
- Patent number 6,469,963
- Issue date Oct 22, 2002
- Ricoh Company, Ltd.
- Yasuo Sawada
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical recording medium and method of information recording/readin...
- Patent number 6,137,769
- Issue date Oct 24, 2000
- Ricoh Company, Ltd.
- Yasuo Sawada
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical information recording medium and method of producing the same
- Patent number 6,045,971
- Issue date Apr 4, 2000
- Ricoh Company, Ltd.
- Toru Yashiro
- G11 - INFORMATION STORAGE
Information Patent Grant
Phthalocyanine compounds
- Patent number 6,043,355
- Issue date Mar 28, 2000
- Ricoh Company, Ltd.
- Toru Yashiro
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Optical recording medium and method of producing the same
- Patent number 5,968,708
- Issue date Oct 19, 1999
- Ricoh Company, Ltd.
- Toru Yashiro
- G11 - INFORMATION STORAGE
Information Patent Grant
Phthalocyanine compounds
- Patent number 5,932,721
- Issue date Aug 3, 1999
- Ricoh Company, Ltd.
- Toru Yashiro
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Optical information recording medium and method of producing the same
- Patent number 5,882,757
- Issue date Mar 16, 1999
- Ricoh Company, Ltd.
- Toru Yashiro
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Optical recording medium and method of producing the same
- Patent number 5,789,138
- Issue date Aug 4, 1998
- Ricoh Company, Ltd.
- Toru Yashiro
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical recording medium and method of producing the same
- Patent number 5,580,696
- Issue date Dec 3, 1996
- Ricoh Company, Ltd.
- Toru Yashiro
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Optical information recording medium
- Patent number 5,532,033
- Issue date Jul 2, 1996
- Ricoh Company, Ltd.
- Toru Yashiro
- G11 - INFORMATION STORAGE
Information Patent Grant
Plastic lens
- Patent number 5,462,806
- Issue date Oct 31, 1995
- Nikon Corporation
- Toshio Konishi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Optical information recording medium
- Patent number 5,316,814
- Issue date May 31, 1994
- Ricoh Company, Ltd.
- Yasuo Sawada
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical information recording medium
- Patent number 5,252,372
- Issue date Oct 12, 1993
- Ricoh Company, Ltd.
- Toru Yashiro
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical recording medium
- Patent number 5,242,730
- Issue date Sep 7, 1993
- Ricoh Company, Ltd.
- Toru Yashiro
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical recording medium
- Patent number 5,238,722
- Issue date Aug 24, 1993
- Ricoh Company, Ltd.
- Toru Yashiro
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical information recording medium
- Patent number 5,169,745
- Issue date Dec 8, 1992
- Ricoh Company, Ltd.
- Toru Yashiro
- G11 - INFORMATION STORAGE

Toru Yashiro

Person

Patents Grantslast 30 patents

Optical recording medium and method of information recording/readin...

Optical recording medium and method of information recording/readin...

Optical information recording medium and method of producing the same

Phthalocyanine compounds

Optical recording medium and method of producing the same

Phthalocyanine compounds

Optical information recording medium and method of producing the same

Optical recording medium and method of producing the same

Optical recording medium and method of producing the same

Optical information recording medium

Plastic lens

Optical information recording medium

Optical information recording medium

Optical recording medium

Optical recording medium

Optical information recording medium