Yoshifumi Tomita

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Mobara, JA

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Patents Grantslast 30 patents

Information Patent Grant
Formation of pattern using acrylamide-diacetoneacrylamide copolymer
- Patent number 4,086,090
- Issue date Apr 25, 1978
- Hitachi, Ltd.
- Takahiro Kohashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method for forming fluorescent screen of color cathode ray tubes us...
- Patent number 4,019,905
- Issue date Apr 26, 1977
- Hitachi, Ltd.
- Yoshifumi Tomita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process for treating surfaces of a perforated mask
- Patent number 3,967,985
- Issue date Jul 6, 1976
- Hitachi, Ltd.
- Akiya Izumi
- H01 - BASIC ELECTRIC ELEMENTS