Takaaki Unnai

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Patents Grantslast 30 patents

Information Patent Grant
Image pick-up tube and apparatus having the same
- Patent number 5,218,264
- Issue date Jun 8, 1993
- Hitachi, Ltd.
- Tadaaki Hirai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of fabricating an image pick-up tube and target section used...
- Patent number 5,021,705
- Issue date Jun 4, 1991
- Hitachi Ltd.
- Masanao Yamamoto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of making a photosensor
- Patent number 4,883,562
- Issue date Nov 28, 1989
- Hitachi, Ltd.
- Hirofumi Ogawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Image pick-up tube target
- Patent number 4,816,715
- Issue date Mar 28, 1989
- Hitachi, Ltd.
- Takaaki Unnai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method for forming a fluorescent screen
- Patent number 4,293,586
- Issue date Oct 6, 1981
- Hitachi, Ltd.
- Takaaki Unnai
- H01 - BASIC ELECTRIC ELEMENTS