Jitsuo Hamai

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Flat fluorescent lamp having transparent electrodes
- Patent number 4,851,734
- Issue date Jul 25, 1989
- Hamai Electric Co., Ltd.
- Jitsuo Hamai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of manufacturing miniature tipless halogen lamp and apparatu...
- Patent number 4,768,985
- Issue date Sep 6, 1988
- Hamai Electric Lamp Co., Ltd.
- Jitsuo Hamai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Apparatus for manufacturing small-size gas-filled lamps
- Patent number 4,693,692
- Issue date Sep 15, 1987
- Hamai Electric Lamp Co., Ltd.
- Jitsuo Hamai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of and apparatus for manufacturing small-size gas-filled lamps
- Patent number 4,627,824
- Issue date Dec 9, 1986
- Hamai Electric Lamp Co., Ltd.
- Jitsuo Hamai
- H01 - BASIC ELECTRIC ELEMENTS