Masakazu Nagasawa

Person

Shimizu, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for supplying pellets to arc tube for discharg...
- Patent number 6,616,494
- Issue date Sep 9, 2003
- Koito Manufacturing Co., Ltd.
- Akihiro Nagata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of producing an arc tube
- Patent number 6,557,379
- Issue date May 6, 2003
- Koito Manufacturing Co., Ltd.
- Masakazu Nagasawa
- C03 - GLASS MINERAL OR SLAG WOOL
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
Method and apparatus for supplying mercury to arc tube for discharg...
- Patent number 6,321,799
- Issue date Nov 27, 2001
- Koito Manufacturing Co., Ltd.
- Kunio Fukai
- G01 - MEASURING TESTING
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
Electrical discharge lamp with ultraviolet filtering globe having r...
- Patent number 5,757,110
- Issue date May 26, 1998
- Koito Manufacturing Co., Ltd.
- Kunimasa Motiduki
- F21 - LIGHTING
Information Patent Grant
Contamination-free method of making arc tubes
- Patent number 5,505,648
- Issue date Apr 9, 1996
- Koito Manufacturing Co., Ltd.
- Masakazu Nagasawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Insulating base for discharge lamp device
- Patent number 5,463,270
- Issue date Oct 31, 1995
- Koito Manufacturing Co., Ltd.
- Yukio Wakimizu
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Discharge lamp apparatus
- Patent number 5,432,399
- Issue date Jul 11, 1995
- Koito Manufacturing Co., Ltd.
- Masakazu Nagasawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Arc tube and method for manufacturing the same
- Patent number 5,286,227
- Issue date Feb 15, 1994
- Koito Manufacturing Co., Ltd.
- Yasuyoshi Numajiri
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Discharge lamp device
- Patent number 5,220,235
- Issue date Jun 15, 1993
- Koito Manufacturing Co., Ltd.
- Yukio Wakimizu
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Manufacturing method of discharge lamp electrode
- Patent number 5,186,671
- Issue date Feb 16, 1993
- Koito Manufacturing Co., Ltd.
- Masakazu Nagasawa
- 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
Information Patent Grant
Discharge lamp base construction
- Patent number 5,059,855
- Issue date Oct 22, 1991
- Koito Manufacturing Co. Ltd.
- Shinichi Irisawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Incandescent lamp with a metal coupling to a plastic lamp base for...
- Patent number 4,769,574
- Issue date Sep 6, 1988
- Koito Seisakusho Co., Ltd.
- Masakazu Nagasawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Sealed beam lamp assembly
- Patent number 4,339,685
- Issue date Jul 13, 1982
- Koito Manufacturing Company, Ltd.
- Norio Saguchi
- H01 - BASIC ELECTRIC ELEMENTS

Masakazu Nagasawa

Person

Patents Grantslast 30 patents

Method and apparatus for supplying pellets to arc tube for discharg...

Method of producing an arc tube

ARC tube for discharge lamp unit and method of manufacturing same

Method and apparatus for supplying mercury to arc tube for discharg...

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

Electrical discharge lamp with ultraviolet filtering globe having r...

Contamination-free method of making arc tubes

Insulating base for discharge lamp device

Discharge lamp apparatus

Arc tube and method for manufacturing the same

Discharge lamp device

Manufacturing method of discharge lamp electrode

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

Discharge lamp base construction

Incandescent lamp with a metal coupling to a plastic lamp base for...

Sealed beam lamp assembly