Hirotaka Nashi

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Koriyama-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Diffraction element and optical head device equipped therewith
- Patent number 8,040,778
- Issue date Oct 18, 2011
- Asahi Glass Company, Limited
- Hirotaka Nashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Diffraction element and optical device
- Patent number 7,142,363
- Issue date Nov 28, 2006
- Asahi Glass Company, Limited
- Hiromasa Sato
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
DIFFRACTION ELEMENT AND OPTICAL HEAD DEVICE EQUIPPED THEREWITH
- Publication number 20090190458
- Publication date Jul 30, 2009
- ASAHI GLASS COMPANY LIMITED
- Hirotaka NASHI
- G02 - OPTICS
Information Patent Application
Diffraction element and optical device
- Publication number 20060001972
- Publication date Jan 5, 2006
- ASAHI GLASS COMPANY, LIMITED
- Hiromasa Sato
- G02 - OPTICS