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:
May. 23, 1995
Filed:
Mar. 09, 1994
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
2101982 ; 210 961 ; 210143 ; 210635 ; 210656 ; 422 70 ; 436 67 ; 436161 ;
Abstract
In a liquid chromatographic system for analyzing biological or vital components in blood, etc., a separation column packed with a packing material of organic porous material containing carboxyalkyl groups as functional groups and having pore diameter of 600 to 1,200 .ANG. in dry state and an ion exchange capacity of 0.1 to 0.5 meq/g on dry basis is used to improve the chromatographic performance of the separation column, 5-component and 6-component analysis are carried out by switching separation columns of different column length or diameter, and judgement of column life is made by evaluation parameters.