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:
Aug. 29, 1989
Filed:
Apr. 07, 1988
Applicant:
Inventors:
Vidar Eklund, Porvoo, FI;
Jan Fors, Porvoo, FI;
Leo Mandell, Porvoo, FI;
Kerstin Meinander, Porvoo, FI;
Johan-Fredrik Selin, Helsinki, FI;
Olli T Turunen, Porvoo, FI;
Assignee:
Neste Oy, , FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D06M / ; D01F / ; C08B / ;
U.S. Cl.
CPC ...
536 32 ;
Abstract
The carbamate content of cellulose carbamate products is reduced by treating such products with solutions of a base, which solution also contains one or several alkali metal salts, particularly carbonates, sulfates, phosphates, borates and acetates.