Nobuo Ohkawai

Person

Shizuoka, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Method of manufacturing arc tube
- Patent number 6,672,923
- Issue date Jan 6, 2004
- Koito Manufacturing Co., Ltd.
- Nobuo Ohkawai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
ARC tube for discharge lamp unit and method of manufacturing same
- Patent number 6,547,619
- Issue date Apr 15, 2003
- Koito Manufacturing Co., Ltd.
- Nobuo Ohkawai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Arc tube with residual-compressive-stress layer for discharge lamp...
- Patent number 6,452,334
- Issue date Sep 17, 2002
- Koito Manufacturing Co., Ltd.
- Yoshitaka Ohshima
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Arc tube for discharge lamp device and method of manufacturing the...
- Patent number 6,411,037
- Issue date Jun 25, 2002
- Koito Manufacturing Co., Ltd.
- Nobuo Ohkawai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Arc tube and fabricating method thereof
- Patent number 6,354,900
- Issue date Mar 12, 2002
- Koito Manufacturing Co., Ltd.
- Yoshitaka Ohshima
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Discharge lamp arc tube and method of producing the same
- Patent number 5,993,279
- Issue date Nov 30, 1999
- Koito Manufacturing Co., Ltd.
- Takeshi Fukuyo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Molybdenum foils with yttrium oxide and recrystallization grains no...
- Patent number 5,962,976
- Issue date Oct 5, 1999
- Koito Manufacturing Co., Ltd.
- Shinichi Irisawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Arc tube having a pair of molybdenum foils, and method for its fabr...
- Patent number 5,936,349
- Issue date Aug 10, 1999
- Koito Manufacturing Co., Ltd.
- Kunio Fukai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Discharge lamp arc tube and method of producing the same
- Patent number 5,877,590
- Issue date Mar 2, 1999
- Koito Manufacturing Co., Ltd.
- Takeshi Fukuyo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Discharge lamp assembly with insulating tubular member and metal ba...
- Patent number 5,177,397
- Issue date Jan 5, 1993
- Koito Manufacturing Co., Ltd.
- Masakazu Nagasawa
- H01 - BASIC ELECTRIC ELEMENTS

Nobuo Ohkawai

Person

Patents Grantslast 30 patents

Method of manufacturing arc tube

ARC tube for discharge lamp unit and method of manufacturing same

Arc tube with residual-compressive-stress layer for discharge lamp...

Arc tube for discharge lamp device and method of manufacturing the...

Arc tube and fabricating method thereof

Discharge lamp arc tube and method of producing the same

Molybdenum foils with yttrium oxide and recrystallization grains no...

Arc tube having a pair of molybdenum foils, and method for its fabr...

Discharge lamp arc tube and method of producing the same

Discharge lamp assembly with insulating tubular member and metal ba...