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Keiko Sakaguchi

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  • Otsu-shi, JP
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Patents Grantslast 30 patents

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    • Patent number 11,554,342
    • Issue date Jan 17, 2023
    • Toyobo Co., Ltd.
    • Yusuke Hidaka
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Patents Applicationslast 30 patents

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    ELECTRET AND FILTER USING THE SAME
    • Publication number 20220288560
    • Publication date Sep 15, 2022
    • TOYOBO CO., LTD.
    • Yoshiyuki Kitagawa
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • Publication number 20210178313
    • Publication date Jun 17, 2021
    • TOYOBO CO., LTD.
    • Yusuke Hidaka
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL