Hiroji Sumiyoshi

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Sagamihara, JP

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Patents Grantslast 30 patents

Information Patent Grant
Production of color selection mechanism for cathode-ray tube
- Patent number 4,746,315
- Issue date May 24, 1988
- Sony Corporation
- Hiroji Sumiyoshi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Cathode ray tube
- Patent number 4,720,748
- Issue date Jan 19, 1988
- Sony Corporation
- Hiroji Sumiyoshi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Cathode ray tube
- Patent number 4,641,059
- Issue date Feb 3, 1987
- Sony Corporation
- Hiroji Sumiyoshi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of manufacturing a glass product and resulting product
- Patent number 4,588,430
- Issue date May 13, 1986
- Sony Corporation
- Hiroji Sumiyoshi
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Cathode ray tube
- Patent number 4,356,515
- Issue date Oct 26, 1982
- Sony Corporation
- Hiroji Sumiyoshi
- H01 - BASIC ELECTRIC ELEMENTS