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:
Apr. 15, 2003
Filed:
Oct. 18, 1999
Applicant:
Inventors:
Paul Edmund Ducharme, Jr., Tinley Park, IL (US);
Myron Donald Nicholson, Lemont, IL (US);
Norman Abbye Portnoy, Naperville, IL (US);
Assignee:
Viskase Corporation, Willowbrook, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08L 1/02 ; D21H 1/118 ;
U.S. Cl.
CPC ...
C08L 1/02 ; D21H 1/118 ;
Abstract
The present invention provides a method of preparing a cellulose solution suitable for extrusion as a seamless tubular film by providing a pulp of substantially open-ended fibrillated softwood fibers having a mean fiber length less than 2.0 mm and then dissolving the pulp in a suitable solvent to produce the cellulose solution. In addition, the present invention provides a method of preparing a cellulose food casing from a cellulose solution of the present invention.