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. 28, 1981
Filed:
Oct. 01, 1979
Applicant:
Inventor:
Carl M Berke, Boston, MA (US);
Assignee:
Polaroid Corporation, Cambridge, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ; F01C / ; F03C / ;
U.S. Cl.
CPC ...
430232 ; 423 22 ; 423 23 ; 423 42 ; 430231 ; 252317 ;
Abstract
Silver-precipitating nuclei are prepared by partially oxidizing a stannous salt reducing agent with a ferric oxidizing agent and then reducing a noble metal salt or complex with said reducing agent.