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:
Jul. 25, 1978
Filed:
May. 03, 1976
Applicant:
Inventor:
Hendrik Schadenberg, Amsterdam, NL;
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
252 / ; 2603 / ; 560 24 ; 560 27 ; 560 28 ; 560 32 ; 560133 ; 560137 ; 560159 ;
Abstract
Novel compounds of the general formula: ##STR1## wherein R and R.sub.2 are hydrocarbyl groups, R.sub.1 is a hydrocarbylene group and R.sub.3 is hydrogen or a hydrocarbyl group, which groups R, R.sub.1, R.sub.2 and R.sub.3 may be substituted by or contain one or more heteroatoms or heterogroups, have utility as antioxidants for organic materials such as lubricating oils.