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. 31, 1999
Filed:
Jul. 01, 1997
Applicant:
Inventor:
William A Mallow, Helotes, TX (US);
Assignee:
Southwest Research Institute, San Antonio, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07D / ; A61C / ; A61C / ;
U.S. Cl.
CPC ...
560172 ; 560155 ; 548227 ; 433226 ; 4332281 ; 4332171 ; 4332221 ;
Abstract
A method is disclosed for making dibasic amino acid monoesters useful in repair of teeth in which a dibasic amino acid is partially esterified with an allylic acrylic compound in the presence of an acidic ion-exchange resin at ambient temperature. The invention also comprises cyclicizing the amino groups of the monoesters.