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:
Mar. 23, 1993
Filed:
Feb. 04, 1992
Applicant:
Inventors:
Shigeru Ookuma, Hofu, JP;
Kouei Igarashi, Osaka, JP;
Masami Hara, Hofu, JP;
Kazuhiro Aso, Ibaraki, JP;
Hideo Yoshidome, Kishiwada, JP;
Hiroshi Nakayama, Hirakata, JP;
Keizo Suzuki, Osaka, JP;
Kazuhiko Nakajima, Osaka, JP;
Assignee:
Kanebo Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08B / ; C08B / ; C08B / ; C08B / ;
U.S. Cl.
CPC ...
536 56 ; 536 57 ; 536 90 ; 536 91 ; 536 92 ; 536 93 ; 536 95 ; 536 96 ; 536 97 ; 536 98 ; 536 99 ; 536100 ;
Abstract
This invention relates to ion-exchanged fine cellulose particles, porous fine cellulose particles which can be advantageously used as an affinity carrier, and methods of production thereof. These fine particles of the invention have the advantage that they possess excellent pressure-resistant strength and can treat treatment liquors under pressure at a high flowing velocity. Thus, they can be advantageously used industrially in various separation and purification processes.