Takashi Usami

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for manufacturing an inter-layer insulating film
- Patent number 5,424,253
- Issue date Jun 13, 1995
- Oki Electric Industry Co., Ltd.
- Takashi Usami
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Composite concentration system
- Patent number 4,571,721
- Issue date Feb 18, 1986
- Nippon Telegraph and Telephone Public Corporation
- Tadahiko Yasui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE