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:
Jun. 24, 1980
Filed:
Apr. 04, 1978
Applicant:
Inventors:
Stanley M Bloom, Waban, MA (US);
Boris Levy, Wayland, MA (US);
Assignee:
Polaroid Corporation, Cambridge, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; C03C / ; C09D / ; B01J / ;
U.S. Cl.
CPC ...
430212 ; 2330 / ; 106-118 ; 106-121 ; 252314 ; 252358 ; 428457 ; 428539 ; 423 22 ; 423 23 ; 423 42 ; 423 43 ; 423 99 ; 423101 ; 423138 ; 423140 ; 423274 ;
Abstract
Clusters or galaxies of noble metal silver-precipitating nuclei for use in silver diffusion transfer processes are formed by reducing a noble metal salt or complex to form a colloid of noble metal nuclei and inducing instability to said colloid, whereby said galaxies are formed.