Louis O. Torregrossa

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Puyallup, WA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for intimately mixing oxygen and pulp while us...
- Patent number 4,298,427
- Issue date Nov 3, 1981
- Weyerhaeuser Company
- Jozef M. Bentvelzen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method and apparatus for treating pulp with oxygen in a multi-stage...
- Patent number 4,298,426
- Issue date Nov 3, 1981
- Weyerhaeuser Company
- Louis O. Torregrossa
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Treating pulp with oxygen
- Patent number 4,295,925
- Issue date Oct 20, 1981
- Weyerhaeuser Company
- Jozef M. Bentvelzen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method and apparatus for treating pulp with oxygen
- Patent number 4,295,926
- Issue date Oct 20, 1981
- Weyerhaeuser Company
- Jozef M. Bentvelzen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method and apparatus for treating pulp with oxygen and storing the...
- Patent number 4,295,927
- Issue date Oct 20, 1981
- Weyerhaeuser Company
- Jozef M. Bentvelzen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Low-consistency ozone delignification
- Patent number 4,216,054
- Issue date Aug 5, 1980
- Weyerhaeuser Company
- Jozef M. Bentvelzen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE