Keizo Takemasa

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of fabricating semiconductor laser diode
- Patent number 6,387,746
- Issue date May 14, 2002
- Oki Electric Industry Co., Ltd.
- Yukio Katoh
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Laser diode
- Publication number 20030231674
- Publication date Dec 18, 2003
- Akira Kaneko
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Method of fabricating semiconductor laser diode
- Publication number 20010036697
- Publication date Nov 1, 2001
- Yukio Katoh
- H01 - BASIC ELECTRIC ELEMENTS