Yoshifumi Tokoyoda

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Chiba-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Diffractive optical element and method for manufacturing same
- Patent number 7,554,733
- Issue date Jun 30, 2009
- Nikon Corporation
- Yoshifumi Tokoyoda
- G02 - OPTICS
Information Patent Grant
Diffractive optical element
- Patent number 7,042,642
- Issue date May 9, 2006
- Nikon Corporation
- Yoshifumi Tokoyoda
- G02 - OPTICS
Information Patent Grant
Exposure method and apparatus
- Patent number 5,739,898
- Issue date Apr 14, 1998
- Nikon Corporation
- Toshihiko Ozawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
DIFFRACTIVE OPTICAL ELEMENT AND METHOD FOR MANUFACTURING SAME
- Publication number 20090273841
- Publication date Nov 5, 2009
- NIKON CORPORATION
- Yoshifumi Tokoyoda
- G02 - OPTICS
Information Patent Application
Diffractive optical element and method for manufacturing same
- Publication number 20060268414
- Publication date Nov 30, 2006
- Yoshifumi Tokoyoda
- G02 - OPTICS
Information Patent Application
Diffractive optical element
- Publication number 20050018299
- Publication date Jan 27, 2005
- NIKON CORPORATION
- Yoshifumi Tokoyoda
- G02 - OPTICS
Information Patent Application
Diffractive optical element and method for manufacturing same
- Publication number 20030161044
- Publication date Aug 28, 2003
- NIKON CORPORATION
- Yoshifumi Tokoyoda
- G02 - OPTICS