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. 30, 1991
Filed:
Jan. 08, 1990
Applicant:
Inventors:
Kazuhiro Kobayashi, Hino, JP;
Shigeharu Koboshi, 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 ...
159 473 ; 159 29 ; 159D / ; 203-2 ; 203 91 ; 354299 ;
Abstract
A method of treating photographic process waste liquor through concentration by evaporation, including heating under reduced pressure an upper part of photographic process waste liquor to concentrate by evaporation the photographic process waste liquor in such a manner that a difference in temperature may be given 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, and causing a solute in the photographic process waste liquor to settle.