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:
Jan. 16, 2007
Filed:
May. 01, 2002
Shinichi Sotome, Tokyo, JP;
Toshimasa Uemura, Ibaraki, JP;
Junzo Tanaka, Ibaraki, JP;
Masanori Kikuchi, Ibaraki, JP;
Kenichi Shinomiya, Tokyo, JP;
Soichiro Itoh, Tokyo, JP;
Tetsuya Tateishi, Ibaraki, JP;
Shinichi Sotome, Tokyo, JP;
Toshimasa Uemura, Ibaraki, JP;
Junzo Tanaka, Ibaraki, JP;
Masanori Kikuchi, Ibaraki, JP;
Kenichi Shinomiya, Tokyo, JP;
Soichiro Itoh, Tokyo, JP;
Tetsuya Tateishi, Ibaraki, JP;
Japan Science and Technology Agency, Saitama, JP;
National Institute for Materials Science, Ibaraki, JP;
National Institute of Advanced Industrial Science and Technology, Tokyo, JP;
Abstract
This invention relates to a process for producing porous and composite materials comprising steps of: freezing a complex containing at least one calcium salt selected from calcium carbonate, calcium phosphate, and hydroxyapatite and collagen, at least a part of which is gelatinized; and then lyophilizing the resultant. The porous and composite materials obtained by the method of the present invention have large pore diameters, high porosities, and adequate mechanical strengths and biodegradability. Thus, they are suitable for implants such as bone fillers, drug carriers for sustained-release, and the like.