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Yoshiatsu Yokoo
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Hidaka-shi, JP
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Patents Grants
last 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 module formed on common substrate for branching an optical...
Patent number
7,215,853
Issue date
May 8, 2007
Hoya Corporation
Kiyoshi Morita
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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
Information
Patent Grant
Positioning method of optical element, positioning member of optica...
Patent number
6,507,446
Issue date
Jan 14, 2003
Hoya Corporation
Teruo Yamashita
G02 - OPTICS
Information
Patent Grant
Method for manufacturing glass product
Patent number
6,434,976
Issue date
Aug 20, 2002
Hoya Corporation
Masahiro Yoshida
G02 - OPTICS
Information
Patent Grant
Optical fiber fixing member, method of manufacturing the optical fi...
Patent number
6,324,332
Issue date
Nov 27, 2001
Hoyo Corporation
Teruo Yamashita
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Optical fiber fixing member and method for manufacturing the same
Patent number
6,240,235
Issue date
May 29, 2001
Hoya Corporation
Ken Uno
G02 - OPTICS
Information
Patent Grant
Preform and process for the production thereof
Patent number
6,231,243
Issue date
May 15, 2001
Hoya Corporation
Lihong Zhang
G02 - OPTICS
Information
Patent Grant
Mold and method of producing the same
Patent number
6,156,243
Issue date
Dec 5, 2000
Hoya Corporation
Hiroyuki Kosuga
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Manufacturing method for glass molded products
Patent number
6,105,395
Issue date
Aug 22, 2000
Hoya Corporation
Masahiro Yoshida
G02 - OPTICS
Information
Patent Grant
Method for manufacturing glass product
Patent number
6,050,110
Issue date
Apr 18, 2000
Hoya Corporation
Masahiro Yoshida
G02 - OPTICS
Patents Applications
last 30 patents
Information
Patent Application
Optical Module and Optical Wavelength Multiplexing and Demultiplexi...
Publication number
20080013955
Publication date
Jan 17, 2008
HOYA CORPORATION
Tetsuo Takano
G02 - OPTICS
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 module
Publication number
20040101306
Publication date
May 27, 2004
Hoya Corporation
Kiyoshi Morita
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Mold and method of producing the same
Publication number
20040047938
Publication date
Mar 11, 2004
Hiroyuki Kosuga
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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
Information
Patent Application
Positioning method of optical element, positioning member of optica...
Publication number
20020015239
Publication date
Feb 7, 2002
Hoya Corporation
Teruo Yamashita
G02 - OPTICS