Yumi Takahashi

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Lens periphery edge processing apparatus
- Patent number 6,817,929
- Issue date Nov 16, 2004
- Kabushiki Kaisha Topcon
- Akio Kobayashi
- B24 - GRINDING POLISHING
Information Patent Grant
Lens periphery edge processing apparatus
- Patent number 6,497,614
- Issue date Dec 24, 2002
- Kabushiki Kaisha Topcon
- Akio Kobayashi
- B24 - GRINDING POLISHING

Patents Applicationslast 30 patents

Information Patent Application
Lens periphery edge processing apparatus
- Publication number 20030060142
- Publication date Mar 27, 2003
- KABUSHIKI KAISHA TOPCON
- Akio Kobayashi
- B24 - GRINDING POLISHING
Information Patent Application
Lens periphery edge processing apparatus
- Publication number 20010031611
- Publication date Oct 18, 2001
- KABUSHIKI KAISHA TOPCON
- Akio Kobayashi
- B24 - GRINDING POLISHING