Tetsuo Kuwabara

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Urawa-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Diffraction optical element, optical system and optical device
- Patent number 6,522,464
- Issue date Feb 18, 2003
- Canon Kabushiki Kaisha
- Tetsuo Kuwabara
- G02 - OPTICS
Information Patent Grant
Mold and method of manufacturing the same
- Patent number 5,662,999
- Issue date Sep 2, 1997
- Canon Kabushiki Kaisha
- Yasushi Taniguchi
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Integral infrared absorbing optical low-pass filter
- Patent number 5,589,882
- Issue date Dec 31, 1996
- Canon Kabushiki Kaisha
- Akihiko Shiraishi
- G02 - OPTICS
Information Patent Grant
Molding method using glass blank
- Patent number 5,192,352
- Issue date Mar 9, 1993
- Canon Kabushiki Kaisha
- Tetsuo Kuwabara
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Optical element and glass blank for producing the optical element
- Patent number 5,168,404
- Issue date Dec 1, 1992
- Canon Kabushiki Kaisha
- Sunao Miyazaki
- G02 - OPTICS
Information Patent Grant
Process for manufacturing optical element
- Patent number 5,160,362
- Issue date Nov 3, 1992
- Canon Kabushiki Kaisha
- Kiyoshi Yamamoto
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method of manufacturing optical device
- Patent number 5,032,159
- Issue date Jul 16, 1991
- Canon Kabushiki Kaisha
- Tetsuo Kuwabara
- C03 - GLASS MINERAL OR SLAG WOOL

Patents Applicationslast 30 patents

Information Patent Application
Diffraction optical element, optical system and optical device
- Publication number 20020015222
- Publication date Feb 7, 2002
- Tetsuo Kuwabara
- G02 - OPTICS