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. 27, 2014
Filed:
Feb. 19, 2009
Applicants:
Marc Sabourin, Beavercreek, OH (US);
Johann Aichinger, Pregarten, AT;
Inventors:
Marc Sabourin, Beavercreek, OH (US);
Johann Aichinger, Pregarten, AT;
Assignee:
Andritz Inc., Glens Falls, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21B 1/26 (2006.01); D21B 1/12 (2006.01); D21B 1/14 (2006.01);
U.S. Cl.
CPC ...
D21B 1/26 (2013.01); D21B 1/12 (2013.01); D21B 1/14 (2013.01);
Abstract
A thermomechanical pulping method including: refining pulp with a high consistency refining stage, and a medium consistency refining stage processing the refined pulp discharge from the high consistency refining stage. Chemical pretreatments for improving pulp quality development during medium consistency refining can be optionally added at the pressurized chip press, fiberizer pre-refining step, primary high consistency refining step, and/or the standpipe feeding the medium consistency refiner.