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. 12, 2019
Filed:
Apr. 01, 2016
Shimadzu Corporation, Kyoto-shi, Kyoto, JP;
Tsutomu Okoba, Kyoto, JP;
Takayuki Iriki, Fulton, MD (US);
SHIMADZU CORPORATION, Kyoto-shi, Kyoto, JP;
Abstract
Provided is a preparative separation chromatograph including: a chromatographhaving a detector; a fraction collector; a controllerfor commanding the fraction collector to initiate a component-collecting operation with reference to a point when the rate of change in an output signal from the detectorexceeds a positive reference value and to discontinue the operation with reference to a point when the absolute value of the rate of change becomes smaller than that of a negative reference value after the rate of change turns negative; a storage sectionfor storing sampling-rate information which relates the value of the output signal to the time interval at which the controller determines the rate of change; and a sampling rate determinerfor determining the time interval for calculating the rate of change based on the sampling-rate information and actual values of the output signal.