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:
Jul. 09, 1991
Filed:
Apr. 16, 1990
Applicant:
Inventors:
Yoshitsugu Sakata, Otsu, JP;
Shinogu Fukahori, Nishinomiya, JP;
Hiroyuki Kodera, Amagasaki, JP;
Kenzi Iwata, Higashiosaka, JP;
Assignee:
Wako Pure Chemical Industries, Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; C09K / ; C01B / ; C01B / ;
U.S. Cl.
CPC ...
502400 ; 55 68 ; 55 71 ; 252189 ; 423230 ; 423240 ;
Abstract
A molded acidic gas absorbent produced by press molding powders, etc. of calcium hydroxide and one or more powders, etc. of alkali metal hydroxides and alkaline earth metal hydroxides except for calcium hydroxide, impregnating the molded article with water, followed by heat treatment while maintaining a predetermined amount of water therein is effective for absorbing an acidic gas such as CO.sub.2 in air and a narcotic gas.