Hidekuni Asai

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical switch and optical add/drop multiplexer using the same
- Patent number 7,236,657
- Issue date Jun 26, 2007
- Hoya Corporation
- Kaoru Kagami
- G02 - OPTICS
Information Patent Grant
Optical switch and optical add/drop multiplexer using the same
- Patent number 7,164,817
- Issue date Jan 16, 2007
- Hoya Corporation
- Kaoru Kagami
- G02 - OPTICS
Information Patent Grant
Optical filtering module and optical devices using such optical fil...
- Patent number 6,876,789
- Issue date Apr 5, 2005
- Hoya Corporation
- Kaoru Kagami
- G02 - OPTICS
Information Patent Grant
Optical filter module and optical apparatus using the same
- Patent number 6,701,041
- Issue date Mar 2, 2004
- Hoya Corporation
- Kaoru Kagami
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Optical switch and optical add/drop multiplexer using the same
- Publication number 20070036481
- Publication date Feb 15, 2007
- HOYA CORPORATION
- Kaoru Kagami
- G02 - OPTICS
Information Patent Application
Optical switch and optical branch/insertion unit comprising it
- Publication number 20050244097
- Publication date Nov 3, 2005
- Hoya Corporation
- Kaoru Kagami
- G02 - OPTICS
Information Patent Application
Optical filtering module and optical devices using such optical fil...
- Publication number 20020126955
- Publication date Sep 12, 2002
- Kaoru Kagami
- G02 - OPTICS
Information Patent Application
Optical filter module and optical apparatus using the same
- Publication number 20020122622
- Publication date Sep 5, 2002
- Hoya Corporation
- Kaoru Kagami
- G02 - OPTICS