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:
Sep. 08, 1992
Filed:
Sep. 24, 1990
Applicant:
Inventors:
Kazo Tokubo, Yokohama, JP;
Michihiro Yamaguchi, Yokohama, JP;
Yutaka Ohtsu, Yokohama, JP;
Kiyoshi Nakamura, Yokohama, JP;
Satoshi Matsumoto, Yokohama, JP;
Akihiko Yamagishi, Chiba, JP;
Assignee:
Shiseido Company Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
2101982 ; 2105021 ; 210656 ; 502-9 ; 502 10 ; 502 62 ; 502 84 ;
Abstract
A packing material for liquid chromatography, comprising a spherical clay mineral powder which comprises a naturally occurring or synthetic water-swellable clay mineral, a clay mineral having foreign cations substantially substituted for interlayer ions inherently present in the naturally occurring or synthetic water-swellable clay mineral, or a calcined product thereof.