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:
Oct. 12, 1982
Filed:
Sep. 17, 1980
Applicant:
Inventors:
Assignee:
Hitachi Chemical Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210635 ; 2101982 ;
Abstract
A special solvent column for gel-permeation chromatography packed with porous styrene-divinylbenzene type copolymer spherical particles in immersed and swollen state with a special eluent, which is a mixture of hexafluoroisopropanol and a chlorine-containing organic solvent such as chloroform, is effective for enlarging the range of samples to be analyzed and molecular-weight distribution measurement can be conducted rapidly at normal temperatures by using said column.