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. 01, 2008
Filed:
Nov. 15, 2004
Hitoshi Kihara, Tokyo, JP;
Hiroshi Tachibana, Tokyo, JP;
Shigeru Hayashida, Tokyo, JP;
Hiroshi Kawakami, Tokyo, JP;
Hitoshi Kihara, Tokyo, JP;
Hiroshi Tachibana, Tokyo, JP;
Shigeru Hayashida, Tokyo, JP;
Hiroshi Kawakami, Tokyo, JP;
Taiyo Nippon Sanso Corporation, Tokyo, JP;
Abstract
An apparatus comprising first to third columns, wherein the outlet of a first column reboiler and the inlet of a second column condenser are connected by a first introduction conduit, and the outlet of a second distillation column reboiler and the inlet of a third column condenser are connected by a second introduction conduit, and additionally the outlet of the second column condenser and the inlet of the first column reboiler are connected by a first return conduit, and the outlet of the third column condenser and the inlet of the second column reboiler are connected by a second return conduit.