Tadashi Kobayashi

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Sabae, JP

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Patents Grantslast 30 patents

Information Patent Grant
Plastic lenses for spectacles with high refractive indices
- Patent number RE39343
- Issue date Oct 17, 2006
- Asahi Lite Optical Co., Ltd.
- Kazunori Kagei
- 351 - Optics: eye examining, vision testing and correcting
Information Patent Grant
Plastic base material
- Patent number 6,770,692
- Issue date Aug 3, 2004
- Asahi Lite Optical Co., Ltd.
- Tadashi Kobayashi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process method optical thermoplastic urethane resin lens and the lens
- Patent number 6,309,568
- Issue date Oct 30, 2001
- Asahi Lite Optical Co., Ltd.
- Zhou Yang
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method for removing hard coat film from plastic lens
- Patent number 6,179,931
- Issue date Jan 30, 2001
- Asahi Lite Optical Co., Ltd.
- Tadashi Kobayashi
- G02 - OPTICS
Information Patent Grant
Plastic lenses for spectacles with high refractive indices
- Patent number 6,070,979
- Issue date Jun 6, 2000
- Asahi Lite Optical Co., Ltd.
- Kazunori Kagei
- G02 - OPTICS
Information Patent Grant
Method of manufacturing plastic lenses
- Patent number 5,922,251
- Issue date Jul 13, 1999
- Asahi Lite Optical Co., Ltd.
- Tadashi Kobayashi
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL