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:
Feb. 28, 1978
Filed:
Jun. 04, 1976
Applicant:
Inventors:
Emil W Deeg, Woodstock, CT (US);
Donald O Hoffman, Sturbridge, MA (US);
Assignee:
American Optical Corporation, Southbridge, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C / ;
U.S. Cl.
CPC ...
106 52 ; 65 3 / ; 65 31 ; 65DI / ; 106 54 ; 106D / ; 252300 ; 350359 ; 427162 ; 427166 ; 428432 ;
Abstract
A process for producing a photochromic silicate glass film is disclosed which is characterized by the steps of forming a solution containing silver ions and a film-forming silicate monomer in a solvent common to both, removing the solvent from the solution to produce a discreet film or a film coating on an article, and exposing the formed film to a source of halide ions to form fine silver halide particles within the film.