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. 08, 1992
Filed:
Nov. 26, 1991
Hisao Oka, Nagoya, JP;
Yoichiro Ito, Bethesda, MD (US);
Abstract
The invention relates to an improved continuous countercurrent chromatography apparatus. The invention further relates to an improved method of countercurrent chromatography comprises filling a separation column with a first solvent, introducing into the column a sample solute to be separated, continuously pumping a second solvent into the column, the second solvent being substantially immiscible with the first solvent, maintaining the solvent flowing out of the column at a temperature effective to avoid clouding thereof, spectrophotometrically monitoring the temperature-maintained separating fractions flowing out of the column, and applying back-pressure to the solvent flowing into and out of the monitor.