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:
Apr. 02, 1991
Filed:
Dec. 20, 1989
Applicant:
Inventors:
Shigeharu Koboshi, Hino, JP;
Kazuhiro Kobayashi, Hino, JP;
Nobutaka Goto, Hino, JP;
Masayuki Kurematsu, Hino, JP;
Naoki Takabayashi, Hino, JP;
Assignee:
Konica Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
159 47003 ; 159 29 ; 159 431 ; 203-1 ; 203-2 ; 203100 ; 203D / ; 203D / ; 354299 ;
Abstract
A method of treating photographic process waste liquor through concentration by evaporation, including heating an upper part of photographic process waste liquor to concentrate by evaporation the photographic process waste liquor in such a manner that the difference between the temperature of the photographic process waste liquor in the vicinity of the heated part and the temperature at a bottom part of the photographic process waste liquor may become 5.degree. C. or more, and causing a solute in the photographic process waste liquor to settle.