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:
May. 27, 1986
Filed:
Jul. 29, 1985
Gary Scholes, Amsterdam, NL;
Robert van Helden, Amsterdam, NL;
Shell Oil Company, Houston, TX (US);
Abstract
Azetidine compounds of the general formula I ##STR1## wherein Ar represents a para-tolyl group and X represents a hydrogen atom, a carboxyl group or a hydroxymethyl group; their preparation from pentaerythritol via compounds of formula ##STR2## wherein Hal represents chlorine, bromine or iodine, Y represents oxygen or ##STR3## and Z represents Hal or OH, together with their use as intermediates in the preparation of 3-carboxyazetidine; also the compounds of formula ##STR4## wherein R.sub.1 and R.sub.2 both represent hydrogen, or together represent ##STR5##
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile