Seiichi Shingaki

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Hadano, JP

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Patents Grantslast 30 patents

Information Patent Grant
Gradient index-type optical device and process for production thereof
- Patent number 5,032,000
- Issue date Jul 16, 1991
- Canon Kabushiki Kaisha
- Seiichi Shingaki
- G02 - OPTICS
Information Patent Grant
Gradient-index-type optical device
- Patent number 4,971,423
- Issue date Nov 20, 1990
- Canon Kabushiki Kaisha
- Kohei Nakata
- G02 - OPTICS
Information Patent Grant
Vitreous film and heat-mode optical recording medium using same
- Patent number 4,946,724
- Issue date Aug 7, 1990
- Canon Kabushiki Kaisha
- Seiichi Shingaki
- C03 - GLASS MINERAL OR SLAG WOOL