Masaharu Koyama

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Mobara, JP

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Patents Grantslast 30 patents

Information Patent Grant
Fill port seal with first and second photosensitizers
- Patent number 4,494,825
- Issue date Jan 22, 1985
- Hitachi, Ltd.
- Ken Sasaki
- G02 - OPTICS
Information Patent Grant
Multi-layer liquid crystal panel with sealing members and retainers...
- Patent number 4,458,987
- Issue date Jul 10, 1984
- Hitachi, Ltd.
- Ken Sasaki
- G02 - OPTICS
Information Patent Grant
Process for producing transparent electroconductive film
- Patent number 4,431,683
- Issue date Feb 14, 1984
- Hitachi, Ltd.
- Ken Sasaki
- G02 - OPTICS
Information Patent Grant
Liquid crystal display element having non-display electrode arrange...
- Patent number 4,412,214
- Issue date Oct 25, 1983
- Hitachi, Ltd.
- Hironari Tanaka
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Liquid crystal display element and production thereof
- Patent number 4,341,445
- Issue date Jul 27, 1982
- Hitachi, Ltd.
- Shigeru Matsuyama
- G02 - OPTICS
Information Patent Grant
Process for the manufacture of liquid crystal display element
- Patent number 4,269,617
- Issue date May 26, 1981
- Hitachi, Ltd.
- Yoshimichi Shibuya
- G02 - OPTICS
Information Patent Grant
Liquid crystal display apparatus
- Patent number 4,127,321
- Issue date Nov 28, 1978
- Hitachi, Ltd.
- Masaharu Koyama
- G02 - OPTICS