Tapio Vihervaara

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Patents Grantslast 30 patents

Information Patent Grant
Additive for paper making
- Patent number 7,094,319
- Issue date Aug 22, 2006
- Ciba Specialty Chemicals Corporation
- Tapio Vihervaara
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Additive for paper making
- Patent number 6,716,313
- Issue date Apr 6, 2004
- Raisio Chemicals, Ltd.
- Tapio Vihervaara
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Additive for paper making
- Patent number 6,398,912
- Issue date Jun 4, 2002
- Raisio Chemicals Ltd.
- Tapio Vihervaara
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Rosin emulsion including starch derivative for paper sizing
- Patent number 6,290,765
- Issue date Sep 18, 2001
- Raisio Chemicals Limited UK
- Michael James Jaycock
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Reducing level of interference chemicals in water circulation of wo...
- Patent number 5,578,169
- Issue date Nov 26, 1996
- Raision Tehtaat OY AB
- Tapio Vihervaara
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE

Patents Applicationslast 30 patents

Information Patent Application
Additive for paper making
- Publication number 20040188048
- Publication date Sep 30, 2004
- Tapio Vihervaara
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Additive for paper making
- Publication number 20030041988
- Publication date Mar 6, 2003
- Tapio Vihervaara
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE