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:
Nov. 27, 2007
Filed:
Jun. 23, 2003
Applicants:
Amar N. Neogi, Kenmore, WA (US);
Gary D. Peterson, Auburn, WA (US);
James Shaw, Puyallup, WA (US);
Inventors:
Assignee:
Weyerhaeuser Company, Federal Way, WA (US);
Primary Examiner:
Int. Cl.
CPC ...
B32B 23/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
Methods for esterifying hydroxyl groups in cellulose, hemicellulose, and lignin in wood are described, wherein the wood is chosen from loblolly, slash, shortleaf, longleaf or radiata pines. Methods can include solvent drying techniques and heating provided by electromagnetic radiation, such as microwave, and radiofrequency. Products made from the methods are described that have greater decay resistance and dimensional stability as compared with non-esterified wood products.