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:
Nov. 17, 1992
Filed:
Dec. 02, 1991
Applicant:
Inventors:
Hubertus G Walraven, Schipluiden, NL;
Paulus B Groen, Spijkenisse, NL;
Everardus J Leenderts, Rhoon, NL;
Assignee:
Shell Internationale Research Maatschappij B.V., The Hague, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
549450 ; 549342 ;
Abstract
A process is disclosed for preparing a 2,2-R.sub.1, R.sub.2 -1,3-dioxolane-4-carboxylic acid or salt thereof rich in either the R or S enantiomer which process comprises
Quick Actions:
Walraven, Hubertus. (1992). Process for the separation of r and s-2,2-r.sub.1,r.sub.2 (U.S. Patent No. 5164519). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5164519
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