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:
Jun. 30, 1981
Filed:
Apr. 04, 1979
Katsuya Sakai, Yokohama, JP;
Ryuichi Mita, Kawasaki, JP;
Toshio Kato, Kawasaki, JP;
Chojiro Higuchi, Kamakura, JP;
Hisamichi Murakami, Yokohama, JP;
Mitsui Toatsu Chemicals Incorporated, Tokyo, JP;
Abstract
An oxidation-reducing reagent for a wet desulfurization process, which comprises (a) one or more compounds selected from the group consisting of salts of substituted anthraquinonesulfonic acids of the general formulas: ##STR1## wherein M stands for a sodium atom, a potassium atom or an ammonium group, and n is an integer of 1 or 2, or (b) a mixture of a salt of anthraquinone-2,7-disulfonic acid and one or more compounds shown by the general formula (I) and/or (II), as well as a process for preparing the compounds of the general formulas (I) and (II).