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:
Dec. 30, 1980
Filed:
Aug. 09, 1978
Applicant:
Inventors:
Masayuki Suzuki, Hachinohe, JP;
Nobuo Onuma, Hachinohe, JP;
Fumihiko Ishizuka, Hachinohe, JP;
Shinichi Hara, Hachinohe, JP;
Akira Osawa, Ichikawa, JP;
Akira Fukuzawa, Yokohama, JP;
Assignees:
Mitsubishi Paper Mills, Ltd., Tokyo, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21C / ; D21C / ; D21C / ;
U.S. Cl.
CPC ...
162 17 ; 162 31 ; 162 42 ; 162 44 ; 162 51 ; 210758 ; 210765 ;
Abstract
A method for oxidizing and removing remaining sodium sulfide as well as generated sulfur compounds by introducing oxygen into cooking liquor at high temperature and high pressure in the end stage of kraft cooking.