Hirotaka Nakai

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Kyoto, JP

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Patents Grantslast 30 patents

Information Patent Grant
Far infrared ray emitting, odor-absorbing material
- Patent number 5,098,700
- Issue date Mar 24, 1992
- O.K. Trading Co., Ltd.
- Hirotaka Nakai
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Far infrared ray emitting body of a core material coated with an ul...
- Patent number 4,886,972
- Issue date Dec 12, 1989
- O.K. Trading Co., Ltd.
- Hirotaka Nakai
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...