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. 04, 1993
Filed:
Oct. 07, 1991
Applicant:
Inventors:
John A Westland, Bothell, WA (US);
R Scott Stephens, Auburn, WA (US);
William C Johnston, Jr, Puyallup, WA (US);
Harold J Rosenkrans, Seattle, WA (US);
Assignee:
Weyerhaeuser Company, Tacoma, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
1061631 ; 106203 ; 106204 ;
Abstract
A binding agent comprising fiber strands of microbially produced cellulose is disclosed. The cellulose is synthesized by certain strains of microorganisms of the genus Acetobacter grown under agitated culture conditions to produce fine, interconnected fiber strands forming a three-dimensional reticulated structure. The binding agent is effective for binding fibers and fragments of material, such as natural and treated wood fragments and particles as well as synthetic materials, and it imparts wet and dry tensile strength to the bound material.