Ryouta Doi

Person

Naka-gun, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Exhaust gas purification apparatus of internal combustion engine an...
- Patent number 7,093,432
- Issue date Aug 22, 2006
- Hitachi, Ltd.
- Hiroshi Hanaoka
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Moisture removal device and method thereof for internal combustion...
- Patent number 6,823,659
- Issue date Nov 30, 2004
- Hitachi, Ltd.
- Toshifumi Hiratsuka
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Method for purifying exhaust gas from internal combustion engines
- Patent number 6,596,247
- Issue date Jul 22, 2003
- Hitachi, Ltd.
- Hidehiro Iizuka
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Exhaust gas purification apparatus of internal combustion engine an...
- Patent number 6,397,582
- Issue date Jun 4, 2002
- Hitachi, Ltd.
- Hiroshi Hanaoka
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Exhaust gas cleaning apparatus and method for internal combustion e...
- Patent number 6,272,848
- Issue date Aug 14, 2001
- Hitachi, Ltd.
- Kojiro Okude
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Exhaust gas purification apparatus of internal combustion engine an...
- Patent number 6,161,378
- Issue date Dec 19, 2000
- Hitachi, Ltd.
- Hiroshi Hanaoka
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Method of manufacturing catalyst for cleaning exhaust gas released...
- Patent number 5,972,828
- Issue date Oct 26, 1999
- Hitachi, Ltd.
- Ryouta Doi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Catalyst for purifying exhaust gas from internal combustion engine...
- Patent number 5,968,870
- Issue date Oct 19, 1999
- Hitachi, Ltd.
- Hidehiro Iizuka
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Fuel cell battery using acidic electrolyte
- Patent number 4,612,261
- Issue date Sep 16, 1986
- Hitachi, Ltd.
- Tsutomu Tsukui
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Liquid fuel cell
- Patent number 4,562,123
- Issue date Dec 31, 1985
- Hitachi, Ltd.
- Toshio Shimizu
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Exhaust Gas Purification Apparatus of Internal Combustion Engine an...
- Publication number 20070204595
- Publication date Sep 6, 2007
- Hitachi, Ltd
- Hiroshi HANAOKA
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Exhaust gas purifcation apparatus of internal combustion engine and...
- Publication number 20050089456
- Publication date Apr 28, 2005
- HITACHI, LTD.
- Hiroshi Hanaoka
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Moisture removal device and method thereof for internal combustion...
- Publication number 20030172646
- Publication date Sep 18, 2003
- Hitachi, Ltd. and Hitachi Car Engineering Co., Ltd.
- Toshifumi Hiratsuka
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
Exhaust gas purifying device for internal combustion engine
- Publication number 20030154713
- Publication date Aug 21, 2003
- Hitachi, Ltd
- Toshifumi Hiratsuka
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Exhaust gas purification apparatus of internal combustion engine an...
- Publication number 20020159926
- Publication date Oct 31, 2002
- Hitachi, Ltd.
- Hiroshi Hanaoka
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Person

Patents Grantslast 30 patents

Exhaust gas purification apparatus of internal combustion engine an...

Moisture removal device and method thereof for internal combustion...

Method for purifying exhaust gas from internal combustion engines

Exhaust gas purification apparatus of internal combustion engine an...

Exhaust gas cleaning apparatus and method for internal combustion e...

Exhaust gas purification apparatus of internal combustion engine an...

Method of manufacturing catalyst for cleaning exhaust gas released...

Catalyst for purifying exhaust gas from internal combustion engine...

Fuel cell battery using acidic electrolyte

Liquid fuel cell

Patents Applicationslast 30 patents

Exhaust Gas Purification Apparatus of Internal Combustion Engine an...

Exhaust gas purifcation apparatus of internal combustion engine and...

Moisture removal device and method thereof for internal combustion...

Exhaust gas purifying device for internal combustion engine

Exhaust gas purification apparatus of internal combustion engine an...