Donald W. Danforth

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Andover, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Pulper cone assembly for handling slabs of reel broke baled pulp an...
- Patent number 6,302,342
- Issue date Oct 16, 2001
- Bolton-Emerson Americas, Inc.
- Donald W. Danforth
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Toroidal flow pulper for difficult materials
- Patent number 6,053,441
- Issue date Apr 25, 2000
- Bolton-Emerson Americas, Inc.
- Donald W. Danforth
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Fiber length indicating apparatus and method
- Patent number 4,554,051
- Issue date Nov 19, 1985
- Bolton-Emerson, Inc.
- Donald W. Danforth
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Bi-directional rotor and stator in a vortical circulation pulper
- Patent number 4,482,095
- Issue date Nov 13, 1984
- Bolton-Emerson, Inc.
- Donald W. Danforth
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Apparatus and method for defibering unconventional material
- Patent number 4,365,761
- Issue date Dec 28, 1982
- Bolton-Emerson, Inc.
- Donald W. Danforth
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Attrition pulper having high level thrust for grinding pulp and ref...
- Patent number 3,946,951
- Issue date Mar 30, 1976
- Bolton-Emerson, Inc.
- Donald W. Danforth
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE