Koji Imai

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Okazaki-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Plastic spectacle lens and spectacles
- Patent number 11,422,287
- Issue date Aug 23, 2022
- Tokai Optical Co., Ltd.
- Koji Imai
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
PLASTIC SPECTACLE LENS AND SPECTACLES
- Publication number 20190369291
- Publication date Dec 5, 2019
- Tokai Optical Co., Ltd.
- Koji IMAI
- G02 - OPTICS
Information Patent Application
Hard coating composition and plastic optical product
- Publication number 20080050601
- Publication date Feb 28, 2008
- Noboru Otani
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...