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:
Aug. 06, 1991
Filed:
Jul. 09, 1990
Applicant:
Inventors:
Tsugio Maejima, Saitama, JP;
Kimio Tamai, Saitama, JP;
Tetsuo Kanakubo, Kawagoe, JP;
Masao Yoshizawa, Tokyo, JP;
Nobuaki Tagaya, Kawagoe, JP;
Hideyuki Kuwahara, Ooimachi, JP;
Takao Hashimoto, Ooimachi, JP;
Noriko Komatsu, Ooimachi, JP;
Keiko Fukamachi, Mitaka, JP;
Assignee:
Toa Nenryo Kogyo K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
2101982 ; 2105021 ; 2105101 ; 423308 ;
Abstract
An assemblage of hydroxyl apatite particles having small and uniform particle size. The median of the particle size is 1 to 10 .mu.m, and at least 90% of the particles in the assemblage have a particle size of not more than 25 .mu.m. The assemblage can be used to pack a liquid chromatography column.