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. 27, 1990
Filed:
Apr. 23, 1987
Applicant:
Inventor:
Mark A Rustad, Afton, MN (US);
Assignee:
Riker Laboratories, Inc., St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
558389 ; 548251 ; 548253 ;
Abstract
Novel compounds which are di-t-butylphenyl alkyl or benzyl ethers which alkyl or benzyl group is substituted by an acidic group are useful an antiallergic agents. Synthetic intermediates for making such compounds are also disclosed.