Hiroki Takazawa

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Shinjuku-ku, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical glass
- Patent number 8,785,339
- Issue date Jul 22, 2014
- Hoya Corporation
- Xuelu Zou
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Optical glass, preform for precision press molding, optical element...
- Patent number 8,647,996
- Issue date Feb 11, 2014
- Hoya Corporation
- Hiroki Takazawa
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Optical glass, preform for precision press molding, and optical ele...
- Patent number 8,575,047
- Issue date Nov 5, 2013
- Hoya Corporation
- Yasuhiro Fujiwara
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Optical glass
- Patent number 8,476,178
- Issue date Jul 2, 2013
- Hoya Corporation
- Xuelu Zou
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Optical glass, precision press-molding preform, optical element and...
- Patent number 8,431,504
- Issue date Apr 30, 2013
- Hoya Corporation
- Hiroki Takazawa
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Optical glass, preform for precision press molding, and optical ele...
- Patent number 8,288,299
- Issue date Oct 16, 2012
- Hoya Corporation
- Yasuhiro Fujiwara
- C03 - GLASS MINERAL OR SLAG WOOL

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL GLASS
- Publication number 20130270493
- Publication date Oct 17, 2013
- Xuelu ZOU
- G02 - OPTICS
Information Patent Application
OPTICAL GLASS, PREFORM FOR PRECISION PRESS MOLDING, AND OPTICAL ELE...
- Publication number 20120309605
- Publication date Dec 6, 2012
- HOYA CORPORATION
- Yasuhiro FUJIWARA
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
OPTICAL GLASS, PREFORM FOR PRECISION PRESS MOLDING, OPTICAL ELEMENT...
- Publication number 20110245063
- Publication date Oct 6, 2011
- HOYA CORPORATION
- Hiroki TAKAZAWA
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
OPTICAL GLASS, PREFORM FOR PRECISION PRESS MOLDING, AND OPTICAL ELE...
- Publication number 20110143907
- Publication date Jun 16, 2011
- HOYA CORPORATION
- Yasuhiro Fujiwara
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
OPTICAL GLASS, PRECISION PRESS-MOLDING PREFORM, OPTICAL ELEMENT AND...
- Publication number 20110034315
- Publication date Feb 10, 2011
- HOYA CORPORATION
- Hiroki Takazawa
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
OPTICAL GLASS
- Publication number 20100317507
- Publication date Dec 16, 2010
- HOYA CORPORATION
- Xuelu Zou
- G02 - OPTICS