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. 25, 1978
Filed:
Aug. 31, 1977
Applicant:
Inventors:
Muneo Saito, Hachioji, JP;
Hideki Konishi, Hachioji, JP;
Assignee:
Japan Spectroscopic Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210 / ; 210141 ; 2101 / ; 73 6 / ;
Abstract
A method of accurate sample introduction, while holding a good reproductivity, into a chromatographic system by means of employing a pulse-motor as a driving source of a syringe for holding the mobile phase, inversely rotating the same pulse-motor by imparting a certain predetermined number of pulses during the sample collecting or picking-up period in order to cause the syringe to make a sucking action, and making the syringe suck certain predetermined amount of the sample from an open end of a mobile phase supplying line which has been disconnected from the column, and an apparatus for actualizing the method.