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:
Feb. 15, 1983
Filed:
Dec. 29, 1980
Michael J Fifolt, Grand Island, NY (US);
Arthur M Foster, Birmingham, MI (US);
Occidental Chemical Corporation, Niagara Falls, NY (US);
Abstract
Ammonium salts of fluorophthalamic acids characterized by the formula ##STR1## wherein n is 1 or 2, are prepared by the steps of (A) reacting a chlorophthalic anhydride of the formula ##STR2## where n is as defined previously, with potassium fluoride or cesium fluoride to form a fluorophthalic anhydride of the formula ##STR3## where n is as previously defined, and (B) reacting the fluorophthalic anhydride with ammonium to form an ammonium salt of a fluorophthalamic acid.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile