Akihito OKUMURA

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Photomask
- Patent number 11,221,559
- Issue date Jan 11, 2022
- Toppan Printing Co., Ltd.
- Akihito Okumura
- G02 - OPTICS
Information Patent Grant
Exposure apparatus and exposure method
- Patent number 10,866,521
- Issue date Dec 15, 2020
- Toppan Printing Co. Ltd.
- Akihito Okumura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
PHOTOMASK, METHOD FOR PRODUCING PHOTOMASK, AND METHOD FOR PRODUCING...
- Publication number 20220100082
- Publication date Mar 31, 2022
- TOPPAN INC.
- Akihito OKUMURA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
PHOTOMASK, METHOD FOR PRODUCING PHOTOMASK, AND METHOD FOR PRODUCING...
- Publication number 20210271160
- Publication date Sep 2, 2021
- Toppan Printing Co., Ltd.
- Akihito OKUMURA
- G02 - OPTICS
Information Patent Application
PHOTOMASK
- Publication number 20200341387
- Publication date Oct 29, 2020
- TOPPAN PRINTING CO., LTD.
- Akihito OKUMURA
- G02 - OPTICS
Information Patent Application
EXPOSURE APPARATUS AND EXPOSURE METHOD
- Publication number 20200124974
- Publication date Apr 23, 2020
- Toppan Printing Co., Ltd.
- Akihito OKUMURA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
PHOTOMASK, METHOD FOR PRODUCING PHOTOMASK, AND METHOD FOR PRODUCING...
- Publication number 20190155147
- Publication date May 23, 2019
- Toppan Printing Co., Ltd.
- Akihito OKUMURA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY