Hiroyuki Koganei

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Gemstone
- Patent number 11,553,769
- Issue date Jan 17, 2023
- GEM S.T.S. Co., Ltd.
- Shu Shiraishi
- A44 - HABERDASHERY JEWELLERY
Information Patent Grant
Gemstone
- Patent number 11,234,499
- Issue date Feb 1, 2022
- GEM S.T.S. Co., Ltd.
- Hiroyuki Koganei
- A44 - HABERDASHERY JEWELLERY

Patents Applicationslast 30 patents

Information Patent Application
GEMSTONE
- Publication number 20220031030
- Publication date Feb 3, 2022
- GEM S.T.S. CO., LTD.
- Shu SHIRAISHI
- A44 - HABERDASHERY JEWELLERY
Information Patent Application
GEMSTONE
- Publication number 20190223565
- Publication date Jul 25, 2019
- Hiroyuki KOGANEI
- A44 - HABERDASHERY JEWELLERY
Information Patent Application
JEWEL
- Publication number 20170202319
- Publication date Jul 20, 2017
- Tasuko Co., Ltd
- Hiroyuki Koganei
- A44 - HABERDASHERY JEWELLERY