Hiroyoshi Yamaga

Person

Fukaya, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Zirconium compound and electrophotographic toner employing it
- Patent number 6,552,211
- Issue date Apr 22, 2003
- Hodogaya Chemical Co., Ltd.
- Masataka Sawano
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Zirconium compound and electrophotographic toner employing it
- Patent number 6,410,198
- Issue date Jun 25, 2002
- Hodogaya Chemical Co., Ltd.
- Masataka Sawano
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Electrophotographic toner
- Patent number 6,110,634
- Issue date Aug 29, 2000
- Hodogaya Chemical Co., Ltd.
- Masataka Sawano
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Hydrophobic cationic dyes and thermal transfer ink ribbons using th...
- Patent number 5,883,232
- Issue date Mar 16, 1999
- Sony Corporation
- Masanobu Hida
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Hydrophobic cationic dyes and thermal transfer ink ribbons using th...
- Patent number 5,834,600
- Issue date Nov 10, 1998
- Sony Corporation
- Masanobu Hida
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Electrostatic image developing toner
- Patent number 5,693,445
- Issue date Dec 2, 1997
- Hodogaya Chemical Co., Ltd.
- Hiroyoshi Yamaga
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Charge controlling agent composition and toner containing said comp...
- Patent number 5,645,967
- Issue date Jul 8, 1997
- Hodogaya Chemical Company Limited
- Sinichi Sato
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Spiro-naphtho-oxazine compound and photosensitive materials using t...
- Patent number 5,641,884
- Issue date Jun 24, 1997
- Hodogaya Chemical Co., Ltd.
- Akira Utsunomiya
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Electrophotographic developing powder
- Patent number 5,164,283
- Issue date Nov 17, 1992
- Hodogaya Chemical Co., Ltd.
- Isao Niimura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Metal of hydroxy-phenylaze and hydroxy-naphthylazo compounds as nea...
- Patent number 4,977,249
- Issue date Dec 11, 1990
- Hodogaya Chemical Co., Ltd.
- Yuto Matsumoto
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Electrophotographic toner containing metal complex
- Patent number 4,624,907
- Issue date Nov 25, 1986
- Hodogaya Chemical Co., Ltd.
- Isao Niimura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic toner containing a metal complex dye
- Patent number 4,433,040
- Issue date Feb 21, 1984
- Hodogaya Chemical Company, Ltd.
- Isao Niimura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Zirconium compound and electrophotographic toner employing it
- Publication number 20010010887
- Publication date Aug 2, 2001
- HODOGAYA CHEMICAL CO., LTD.
- Masatake Sawano
- C07 - ORGANIC CHEMISTRY

Hiroyoshi Yamaga

Person

Patents Grantslast 30 patents

Zirconium compound and electrophotographic toner employing it

Zirconium compound and electrophotographic toner employing it

Electrophotographic toner

Hydrophobic cationic dyes and thermal transfer ink ribbons using th...

Hydrophobic cationic dyes and thermal transfer ink ribbons using th...

Electrostatic image developing toner

Charge controlling agent composition and toner containing said comp...

Spiro-naphtho-oxazine compound and photosensitive materials using t...

Electrophotographic developing powder

Metal of hydroxy-phenylaze and hydroxy-naphthylazo compounds as nea...

Electrophotographic toner containing metal complex

Electrophotographic toner containing a metal complex dye

Patents Applicationslast 30 patents

Zirconium compound and electrophotographic toner employing it