Tohru Koyama

Person

Suwa-cho, Hitachi-shi, Ibaraki-ken, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Polymer electrolyte fuel cell
- Patent number 7,659,028
- Issue date Feb 9, 2010
- Hitachi, Ltd.
- Katsunori Nishimura
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Solid polyelectrolyte, assembly of membrane and electrodes, amd fue...
- Patent number 7,541,107
- Issue date Jun 2, 2009
- Hitachi, Ltd.
- Tohru Koyama
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Electrode for polymer electrolyte fuel cell, separator therefore, a...
- Patent number 7,425,383
- Issue date Sep 16, 2008
- Hitachi, Ltd.
- Katsunori Nishimura
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Fuel cell, polyelectrolyte and ion-exchange resin use for same
- Patent number 7,279,244
- Issue date Oct 9, 2007
- Hitachi, Ltd.
- Makoto Morishima
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Fuel cell, polyelectrolyte and ion-exchange resin used for same
- Patent number 7,022,743
- Issue date Apr 4, 2006
- Hitachi, Ltd.
- Makoto Morishima
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Fuel cell, polyelectrolyte and ion-exchange resin used for same
- Patent number 6,989,212
- Issue date Jan 24, 2006
- Hitachi, Ltd.
- Makoto Morishima
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Solid polyelectrolyte, assembly of membrane and electrodes, and fue...
- Patent number 6,893,764
- Issue date May 17, 2005
- Hitachi, Ltd.
- Tohru Koyama
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Thermosetting resin composition, electrically insulated coil, elect...
- Patent number 5,982,056
- Issue date Nov 9, 1999
- Hitachi, Ltd.
- Tohru Koyama
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method for producing electrically insulated coils
- Patent number 5,733,402
- Issue date Mar 31, 1998
- Hitachi, Ltd.
- Katsuo Sugawara
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Thermosetting resin composition for casting high-voltage coil, and...
- Patent number 5,324,767
- Issue date Jun 28, 1994
- Hitachi, Ltd.
- Tohru Koyama
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polymer having dihydropyridine rings or dihydrotriazine rings, proc...
- Patent number 5,166,283
- Issue date Nov 24, 1992
- Hitachi Ltd.
- Akio Nishikawa
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Electrically insulated coil
- Patent number 5,075,159
- Issue date Dec 24, 1991
- Tohru Koyama
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Thermosetting resin composition and prepolymer thereof
- Patent number 4,448,940
- Issue date May 15, 1984
- Hitachi, Ltd.
- Tohru Koyama
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Odorless or low-odor crosslinkable compound and resin composition c...
- Patent number 4,369,288
- Issue date Jan 18, 1983
- Hitachi Chemical Company, Ltd.
- Tohru Koyama
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Odorless or low-odor crosslinkable compound and resin composition c...
- Patent number 4,297,471
- Issue date Oct 27, 1981
- Hitachi Chemical Company, Ltd.
- Tohru Koyama
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Thermosettable, polymerizable resin composition comprising a polyep...
- Patent number 4,129,554
- Issue date Dec 12, 1978
- Hitachi Chemical Co., Ltd.
- Yoshiharu Karasawa
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
Electrode for polymer electrolyte fuel cell, separator therefore, a...
- Publication number 20060210861
- Publication date Sep 21, 2006
- Hitachi, Ltd
- Katsunori Nishimura
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
Fuel cell, polyelectrolyte and ion-exchange resin use for same
- Publication number 20050271923
- Publication date Dec 8, 2005
- Hitachi, Ltd
- Makoto Morishima
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Fuel cell, electronic appliance and business method
- Publication number 20050074656
- Publication date Apr 7, 2005
- Hitachi Maxell, Ltd.
- Tohru Koyama
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Solid polyelectrolyte, assembly of membrane and electrodes, amd fue...
- Publication number 20050031930
- Publication date Feb 10, 2005
- Tohru Koyama
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Electrode for polymer electrolyte fuel cell, separator therefor, an...
- Publication number 20040209146
- Publication date Oct 21, 2004
- Hitachi, Ltd
- Katsunori Nishimura
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
Electrode for polymer electrolyte fuel cell, separator therefor, an...
- Publication number 20040209149
- Publication date Oct 21, 2004
- Hitachi, Ltd
- Katsunori Nishimura
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
Fuel cell, polyelectrolyte and ion-exchange resin used for same
- Publication number 20030129467
- Publication date Jul 10, 2003
- Hitachi, Ltd
- Makoto Morishima
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Fuel cell, polyelectrolyte and ion-exchange resin used for same
- Publication number 20030118886
- Publication date Jun 26, 2003
- Makoto Morishima
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Solid polyelectrolyte, assembly of membrane and electrodes, and fue...
- Publication number 20030096149
- Publication date May 22, 2003
- Tohru Koyama
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Electrode for polymer electrolyte fuel cell, separator therefor, an...
- Publication number 20030082429
- Publication date May 1, 2003
- Katsunori Nishimura
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...

Tohru Koyama

Person

Patents Grantslast 30 patents

Polymer electrolyte fuel cell

Solid polyelectrolyte, assembly of membrane and electrodes, amd fue...

Electrode for polymer electrolyte fuel cell, separator therefore, a...

Fuel cell, polyelectrolyte and ion-exchange resin use for same

Fuel cell, polyelectrolyte and ion-exchange resin used for same

Fuel cell, polyelectrolyte and ion-exchange resin used for same

Solid polyelectrolyte, assembly of membrane and electrodes, and fue...

Thermosetting resin composition, electrically insulated coil, elect...

Method for producing electrically insulated coils

Thermosetting resin composition for casting high-voltage coil, and...

Polymer having dihydropyridine rings or dihydrotriazine rings, proc...

Electrically insulated coil

Thermosetting resin composition and prepolymer thereof

Odorless or low-odor crosslinkable compound and resin composition c...

Odorless or low-odor crosslinkable compound and resin composition c...

Thermosettable, polymerizable resin composition comprising a polyep...

Patents Applicationslast 30 patents

Electrode for polymer electrolyte fuel cell, separator therefore, a...

Fuel cell, polyelectrolyte and ion-exchange resin use for same

Fuel cell, electronic appliance and business method

Solid polyelectrolyte, assembly of membrane and electrodes, amd fue...

Electrode for polymer electrolyte fuel cell, separator therefor, an...

Electrode for polymer electrolyte fuel cell, separator therefor, an...

Fuel cell, polyelectrolyte and ion-exchange resin used for same

Fuel cell, polyelectrolyte and ion-exchange resin used for same

Solid polyelectrolyte, assembly of membrane and electrodes, and fue...

Electrode for polymer electrolyte fuel cell, separator therefor, an...