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:
Dec. 31, 1996
Filed:
Dec. 07, 1994
Applicant:
Inventors:
Walter E Sande, Shelton, WA (US);
Karl D Sears, Shelton, WA (US);
Assignee:
Rhone-Poulenc Inc., Cranbury, NJ (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D21C / ;
U.S. Cl.
CPC ...
162-7 ; 162-8 ; 162 16 ; 162 14 ;
Abstract
This invention relates generally to a method for extracting lignosulfonate for the manufacture of vanillin and other specialty chemicals. Specifically, the invention relates to a method for recovering lignosulfonates from newsprint comprising the steps of:
Sande, Walter. (1996). Method for preparing vanillin from old newsprint (U.S. Patent No. 5589030). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5589030
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile