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:
Sep. 18, 1984
Filed:
Jan. 20, 1983
Applicant:
Inventor:
Edward Degginger, Convent Station, NJ (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430357 ; 430432 ; 430463 ;
Abstract
The color-intensity of exposed and developed Kodachrome color film in the form of color transparencies or continuous strip such as movie film can be reduced by treating selected areas or all of the emulsion side of said color film with an aqueous solution of a dichromate salt acidified with an inorganic mineral acid or formic acid. Any undesirable alteration in color tone is minimized by including a soluble salt of nickel or cobalt in said aqueous solution. The reduction in color-intensity is a function of time and/or acid concentration.