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:
Apr. 20, 1976
Filed:
Jan. 14, 1974
Applicant:
Inventor:
Jacques Becuwe, Fontenay-sous-Bois, FR;
Assignee:
Rhone-Progil, Courbevoie, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2603467 ; 2325 / ; 23259 ;
Abstract
A method of condensing and recovering phthalic anhydride in dilute concentration in gases discharged from reactors. The method comprises condensing the anhydride on a solid granular carrier moving in a pneumatic conveyor, separating the condensate from its carrier and cooling the said carried in a fluidized bed for recycling it. The method is also application to the condensation of other sublimable substances.
Becuwe, Jacques. (1976). Method of condensing phthalic anhydride (U.S. Patent No. 3952022). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3952022
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile