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. 07, 1991
Filed:
Jan. 16, 1990
Applicant:
Inventors:
Assignee:
Nihon Bunko Kogyo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210634 ; 210656 ; 2101982 ; 210511 ; 260412 ; 2604128 ; 2604285 ;
Abstract
Extraction and separation method and apparatus using a supercritical fluid for extracting a specified component from a sample by a supercritical fluid and introducing the supercritical fluid containing the extracted component into a silica gel column coated with silver nitrate so as to separate the extracted component. By the combination of the extracting operation by a supercritical fluid under mild conditions and chromatography taking the advantage of the selectivity of the silica gel column coated with silver nitrate to olefins, the extract is obtained at a high concentration without producing denaturation.