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. 15, 1986
Filed:
Feb. 14, 1983
Applicant:
Inventor:
Constantine I Courduvelis, Orange, CT (US);
Assignee:
Enthone, Incorporated, West Haven, CT (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ; C23C / ;
U.S. Cl.
CPC ...
502 24 ; 106-111 ;
Abstract
A method for the recovery and reuse of an expensive palladium-tin catalyst whereby alkali hydroxide or carbonate is added to the exhausted catalytic solution and/or the spent rinse water solution to precipitate out a catalyst residue, which is then filtered, collected, washed, and dissolved in a hydrohalide acid and adjusted to a predetermined concentration.