Yoko ISHITSUKA

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Joetsu-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing synthetic quartz glass substrate
- Patent number 11,465,260
- Issue date Oct 11, 2022
- Shin-Etsu Chemical Co., Ltd.
- Yoko Ishitsuka
- B24 - GRINDING POLISHING
Information Patent Grant
Method for producing substrate
- Patent number 10,646,976
- Issue date May 12, 2020
- Shin-Etsu Chemical Co., Ltd.
- Yoko Ishitsuka
- B24 - GRINDING POLISHING

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR PRODUCING SYNTHETIC QUARTZ GLASS SUBSTRATE
- Publication number 20190366510
- Publication date Dec 5, 2019
- Shin-Etsu Chemical Co., Ltd.
- Yoko ISHITSUKA
- B24 - GRINDING POLISHING
Information Patent Application
LARGE-SIZE SYNTHETIC QUARTZ GLASS SUBSTRATE, EVALUATION METHOD, AND...
- Publication number 20180319705
- Publication date Nov 8, 2018
- Shin-Etsu Chemical Co., Ltd.
- Yoko ISHITSUKA
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
METHOD FOR PRODUCING SUBSTRATE
- Publication number 20180056475
- Publication date Mar 1, 2018
- Shin-Etsu Chemical Co., Ltd.
- Yoko ISHITSUKA
- B24 - GRINDING POLISHING
Information Patent Application
METHOD FOR PREPARING SYNTHETIC QUARTZ GLASS SUBSTRATE
- Publication number 20170260081
- Publication date Sep 14, 2017
- Shin-Etsu Chemical Co., Ltd.
- Yoko ISHITSUKA
- C03 - GLASS MINERAL OR SLAG WOOL