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:
Jan. 27, 1976
Filed:
Sep. 19, 1974
Hamilton M Solidum, North Attleboro, MA (US);
Robert G Zobbi, Southbury, CT (US);
American Chemical & Refining Company, Incorporated, Waterbury, CT (US);
Abstract
A dry powder composition for stripping gold and silver contains 78.0-95.0 percent of a soluble cyanide compound, 0.01-5.0 percent of a soluble lithium compound, 0.01-0.5 percent of a soluble lead or bismuth compound as an auxiliary agent, and 5.0-22.0 percent of a water soluble ring-substituted nitrobenzene acid compound. The nitrobenzene acid compounds are selected from the group consisting of the alkali metal and ammonium salts of methyl-nitrobenzoic acid, chloro-nitrobenzoic acid and amino nitrobenzoic acid and of chloro-nitrobenzenesulfonamides. In using the composition, 7.5-60.0 grams per liter of the dry powder composition is dissolved inwater and the resultant aqueous solution is maintained at a temperature of 18.degree.-55.degree. Centigrade. The solution may be replenished as the stripping rate decreases by addition of further amounts of the dry powder composition.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile