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:
Feb. 21, 1995
Filed:
Jan. 26, 1994
Applicant:
Inventors:
Richard R Hepner, Wilmington, NC (US);
Robert E Michel, Wilmington, NC (US);
Robert E Trotter, Hockessin, DE (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
203 51 ; 203 60 ; 203 71 ; 560 78 ; 568868 ; 568871 ;
Abstract
Separation of ethylene glycol and diethylene glycol from dimethyl terephthalate is accomplished by distillation using methyl benzoate or the methyl ester of p-toluic acid as an azeotropic agent.
Quick Actions:
Hepner, Richard. (1995). Process for the separation of glycols from dimethyl terephthalate (U.S. Patent No. 5391263). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5391263
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile