Hirohisa Kato

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Patents Grantslast 30 patents

Information Patent Grant
Antireflection solution for optical parts and method for antireflec...
- Patent number 5,049,414
- Issue date Sep 17, 1991
- Ito Optical Industrial Co., Ltd.
- Hirohisa Kato
- G02 - OPTICS
Information Patent Grant
Method for dirtproofing treatment for plastic lens
- Patent number 4,944,962
- Issue date Jul 31, 1990
- Ito Optical Industrial Co., Ltd.
- Shoichiro Furuta
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL