Yuyoshi Saito

Follow

Person

Fukui, JP

People

Patents Grantslast 30 patents

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
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