Itaru Yokohama

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Isehara, JP

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Patents Grantslast 30 patents

Information Patent Grant
Photonic crystal waveguide
- Patent number 6,643,439
- Issue date Nov 4, 2003
- Nippon Telegraph and Telephone Corporation
- Masaya Notomi
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Deuterated 2-adamantylamino-5-nitropyridine, organic nonlinear opti...
- Patent number 5,981,756
- Issue date Nov 9, 1999
- Nippon Telegraph and Telephone Corporation
- Atsushi Yokoo
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing garnet single crystal
- Patent number 5,851,284
- Issue date Dec 22, 1998
- Nippon Telegraph & Telephone Corporation
- Shigeo Ishibashi
- C30 - CRYSTAL GROWTH
Information Patent Grant
Method and apparatus for stabilizing frequency of semiconductor laser
- Patent number 5,025,448
- Issue date Jun 18, 1991
- Nippon Telegraph & Telephone Corporation
- Shoichi Sudo
- G02 - OPTICS
Information Patent Grant
Fiber coupler and method and apparatus for manufacturing the same
- Patent number 4,869,570
- Issue date Sep 26, 1989
- Nippon Telegraph & Telephone Corporation
- Itaru Yokohama
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Photonic crystal waveguide
- Publication number 20020118941
- Publication date Aug 29, 2002
- Masaya Notomi
- B82 - NANO-TECHNOLOGY