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:
Nov. 20, 2007
Filed:
Nov. 22, 2001
Koichi Asano, Utsunomiya, JP;
Shigeru Hayashida, Tsuchiura, JP;
Nobuaki Egoshi, Tsuchiura, JP;
Hiroshi Kawakami, Tsuchiura, JP;
Koichi Asano, Utsunomiya, JP;
Shigeru Hayashida, Tsuchiura, JP;
Nobuaki Egoshi, Tsuchiura, JP;
Hiroshi Kawakami, Tsuchiura, JP;
Koichi Asano, Tochigi-ken, JP;
Taiyo Nippon Sanso Corporation, Tokyo, JP;
Abstract
By using a dephlegmator which conducts distillation concurrently with heat exchange within at least one distillation column, or a portion of one distillation column, of a distillation cascade, the quantity of liquid holdup within the distillation apparatus is reduced and the start-up time is shortened. Consequently, the operational costs associated with startup are reduced, and productivity is improved markedly.