The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 31, 2005
Filed:
Aug. 08, 1997
Applicant:
Marc J. Sabourin, Huber Heights, OH (US);
Inventor:
Marc J. Sabourin, Huber Heights, OH (US);
Assignee:
Andritz Inc., Muncy, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21B001/14 ;
U.S. Cl.
CPC ...
Abstract
A method and apparatus for pretreating or conditioning lignocellulose fiber containing feed material in preparation for conversion to pulp. Wood chips are pretreated under conditions of elevated temperature, pressure and humidity and subsequently compressed to cause destructuring of the fibers of the feed material. The pretreated wood chips are then converted to pulp using such methods as the ground wood pulping process or chemical digestion process.