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:
Aug. 02, 2005
Filed:
Nov. 21, 2002
Tatsushi Urakami, Tsukuba, JP;
Tooru Nagasaka, Tsuchiura, JP;
Masato Kawai, Kofu, JP;
Akihiro Nakamura, Kofu, JP;
Tatsushi Urakami, Tsukuba, JP;
Tooru Nagasaka, Tsuchiura, JP;
Masato Kawai, Kofu, JP;
Akihiro Nakamura, Kofu, JP;
Taiyo Nippon Sanso Corporation, Tokyo, JP;
Abstract
A gas separation method and apparatus that recovers efficiently principal gas components from a feed gas that includes a plurality of components, and enables supplying the product gases continuously at a stable flow rate and component concentration. A first separation step using a first adsorption column and a second separation step using a second adsorption column are provided, a circulating feed gas, consisting of the recovered exhaust gases discharged in each of the steps and the feed gas, is used as a gas to be separated. The outflow rate and component concentration of a second gas product are maintained constant by controlling the outflow rate of the first gas product.