Yoichiro Yamashita

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Biodegradable cellulose acetate structure and tobacco filter
- Patent number 6,739,344
- Issue date May 25, 2004
- Japan Tobacco Inc.
- Yoichiro Yamashita
- A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES
Information Patent Grant
Molded article of biodegradable cellulose acetate and filter plug f...
- Patent number 6,571,802
- Issue date Jun 3, 2003
- Japan Tobacco Inc.
- Yoichiro Yamashita
- A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES
Information Patent Grant
Cigarette filter and filter material therefor
- Patent number 5,913,311
- Issue date Jun 22, 1999
- Mitsubishi Rayon Co., Ltd.
- Katsutaka Ito
- A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES

Patents Applicationslast 30 patents

Information Patent Application
Filter assembly for a cigarette and method of producing same
- Publication number 20040097354
- Publication date May 20, 2004
- Yoichiro Yamashita
- A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES
Information Patent Application
Biodegradable cellulose acetate structure and tobacco filter
- Publication number 20020096300
- Publication date Jul 25, 2002
- Yoichiro Yamashita
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING