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. 13, 2001
Filed:
Jan. 22, 1999
Applicant:
Inventors:
Yutaka Ohtsu, Yokohama, JP;
Isao Tanaka, Yokohama, JP;
Yasuhiko Kadota, Yokohama, JP;
Michihiro Yamaguchi, Yokohama, JP;
Assignee:
Shiseido Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C11B 7/00 ;
U.S. Cl.
CPC ...
C11B 7/00 ;
Abstract
Disclosed herein are a cation-exchanged clay mineral comprising a swelling clay mineral with the cations between layers substantially replaced by low-valence metal amine complexes and/or low-valence metal ammine complexes, and a packing material for chromatography using the same. Use of the packing material provides a sharp peak with respect to a highly unsaturated compound. Since the packing material is unlikely to be influenced by a solvent, it is usable for a long time with good stability.