Ritsuko Shidei

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Kyoto, JP

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Patents Grantslast 30 patents

Information Patent Grant
Production of fiber reinforced composite
- Patent number 5,906,712
- Issue date May 25, 1999
- Unitika Ltd.
- Keiichi Asami
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Production of microspheroidal particles of resole resins
- Patent number 4,778,695
- Issue date Oct 18, 1988
- Unitika Ltd.
- Yoshiaki Echigo
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Microspherical cured phenolic resin particles and process for produ...
- Patent number 4,748,214
- Issue date May 31, 1988
- Unitika Ltd.
- Keiichi Asami
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Microspherical particles of resole resins and process for producing...
- Patent number 4,640,971
- Issue date Feb 3, 1987
- Unitika Ltd.
- Yoshiaki Echigo
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...