Kei Tsuruoka

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Hinge device
- Patent number 11,788,331
- Issue date Oct 17, 2023
- Kei Tsuruoka
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Hinge device
- Patent number 7,895,710
- Issue date Mar 1, 2011
- Fujitsu Limited
- Hisamitsu Takagi
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
HINGE DEVICE
- Publication number 20220316248
- Publication date Oct 6, 2022
- Sugatsune Kogyo Co., Ltd.
- Kei TSURUOKA
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
Hinge device
- Publication number 20060196009
- Publication date Sep 7, 2006
- Fijitsu Limited
- Hisamitsu Takagi
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
Hinge device
- Publication number 20060174443
- Publication date Aug 10, 2006
- Hisamitsu Takagi
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES