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:
Mar. 03, 1981
Filed:
Mar. 20, 1980
Applicant:
Inventors:
Augustus Fletcher, Bristol, CT (US);
William L Moriarty, South Meriden, CT (US);
Assignee:
American Chemical & Refining Company, Incorporated, Waterbury, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D / ; C25D / ;
U.S. Cl.
CPC ...
204 / ; 204 / ;
Abstract
A bath for electroplating hard gold deposits at relatively high current efficiencies comprises an aqueous solution of a phosphate electrolyte, 1-hydroxyethylidene-1,1-diphosphonic acid, metal constituent, alkali metal gold cyanide and a small amount of free alkali metal cyanide. The bath is maintained at a pH of 3.0-13.0 and operated at a current density of 0.1-165 amperes per square decimeter.
Fletcher, Augustus. (1981). Composition and method for gold plating (U.S. Patent No. 4253920). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4253920
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile