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:
Mar. 04, 2003
Filed:
Apr. 23, 2002
Applicant:
Inventors:
James E. Sealey, II, Federal Way, WA (US);
W. Harvey Persinger, Jr., Enumclaw, WA (US);
Mengkui Luo, Tacoma, WA (US);
Brian Wester, Sumner, WA (US);
Assignee:
Weyerhaeuser Company, Federal Way, WA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B 2/300 ;
U.S. Cl.
CPC ...
B32B 2/300 ;
Abstract
The present invention provides lyocell fibers made from pulp, in particular a pulp having a high hemicellulose content of at least 5%, includes cellulose that has a low average degree of polymerization of from about 200 to about 1100, a kappa number of less than 2.0, and wherein greater than 4% of pulp fibers have a length-weighted fiber length of less than 2.0 mm.