Yasuaki UMEZAWA

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Niigata, JP

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Patents Grantslast 30 patents

Information Patent Grant
Exposure apparatus, mask, and optical film
- Patent number 9,760,013
- Issue date Sep 12, 2017
- Arisawa Mfg. Co., Ltd.
- Yasuaki Umezawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Optical diffraction element, optical pickup, and optical diffractio...
- Patent number 9,594,276
- Issue date Mar 14, 2017
- Arisawa Mfg. Co., Ltd.
- Yasuaki Umezawa
- G02 - OPTICS
Information Patent Grant
Light diffraction element and optical low pass filter
- Patent number 9,158,123
- Issue date Oct 13, 2015
- Arisawa Mfg. Co., Ltd.
- Yuichi Kakubari
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
THREE-DIMENSIONAL DISPLAY DEVICE AND CIRCULARLY POLARIZED GLASSES
- Publication number 20230185107
- Publication date Jun 15, 2023
- Arisawa Mfg. Co., Ltd.
- Shigehiko Kon
- G02 - OPTICS
Information Patent Application
EXPOSURE APPARATUS, MASK, AND OPTICAL FILM
- Publication number 20150227057
- Publication date Aug 13, 2015
- Arisawa Mfg. Co., Ltd.
- Yasuaki UMEZAWA
- G02 - OPTICS
Information Patent Application
EYEGLASS COMPONENT, EYEGLASSES, AND EYEGLASS COMPONENT MANUFACTURIN...
- Publication number 20140293417
- Publication date Oct 2, 2014
- Arisawa Mfg. Co., Ltd.
- Tatsuya SATO
- G02 - OPTICS
Information Patent Application
OPTICAL DIFFRACTION ELEMENT, OPTICAL PICKUP, AND OPTICAL DIFFRACTIO...
- Publication number 20140071394
- Publication date Mar 13, 2014
- Arisawa Mfg. Co., Ltd.
- Yasuaki UMEZAWA
- G02 - OPTICS
Information Patent Application
LIGHT DIFFRACTION ELEMENT AND OPTICAL LOW PASS FILTER
- Publication number 20140016081
- Publication date Jan 16, 2014
- Arisawa Mfg. Co., Ltd.
- Yuichi KAKUBARI
- G02 - OPTICS