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. 07, 1998
Filed:
Jun. 07, 1996
Applicant:
Inventors:
Arthur Spring, Flawil, CH;
Stefan Hungerbuhler, Flawil, CH;
Marco Sanwald, Grub, CH;
Erwin Bossart, Flawil, CH;
Assignee:
Buchi Labortechnik AG, Flawil, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B01D / ; C10B / ;
U.S. Cl.
CPC ...
202168 ; 202169 ; 202254 ;
Abstract
Extractor (21) has extraction vessel (24) to which reflux line (26) is molded in one piece. Valve (1) which can be opened to allow the extract to flow back from extraction vessel (24) into distillation vessel (22) is sealed into reflux line (26). Valve (1) can be triggered depending on the height of the solvent level in extraction vessel (24).