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:
Oct. 13, 1987
Filed:
Aug. 18, 1986
Applicant:
Inventor:
Gebran J Sabongi, St. Paul, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430264 ; 430268 ; 430486 ; 430331 ; 430484 ; 430485 ; 430204 ; 430205 ; 430265 ; 430267 ; 430250 ; 430479 ; 430438 ; 430306 ; 430309 ; 430405 ;
Abstract
An alkaline aqueous tanning developing solution for photographic image development comprising at least one hydroxylamine derivative. Preferred formulations may also contain at least one water-miscible polyhydroxy aliphatic organic solvent and/or a developing agent which comprises a polyhydroxybenzene compound having at least two hydroxy groups and at least one electron withdrawing and good leaving group suitable for nucleophilic addition.