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. 07, 1999
Filed:
May. 21, 1992
Applicant:
Inventors:
Katsumi Kaneko, Ichihara, JP;
Takeshi Maeda, Kobe, JP;
Assignee:
Osaka Gas Company Limited, Osaka-fu, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
95126 ; 95117 ; 95121 ; 95123 ; 95128 ;
Abstract
A gas phase adsorption process in which a gas phase containing water vapor or a basic gas is brought into contact with activated carbon fiber to adsorb the water vapor or basic gas. The activated carbon fiber comprises pitch-based oxidized activated carbon fiber having oxygen-containing functional groups and an oxygen content of 3-18% by weight, based on the weight of the fiber. The oxidized activated carbon fiber is prepared by oxidizing pitch-based activated carbon fiber having a specific surface area of 200-2500 m.sup.2 /g.