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:
Sep. 13, 2011
Filed:
Jan. 11, 2005
Kohzo Ito, Tokyo, JP;
Masatoshi Kidowaki, Tokyo, JP;
Kohzo Ito, Tokyo, JP;
Masatoshi Kidowaki, Tokyo, JP;
The University of Tokyo, Tokyo, JP;
Abstract
A compound or material having safety, namely, biocompatibility that exhibits such a nongel-gel transition that the state of being nongel is presented on the side of low temperature while the state of being crosslinked, for example, gel is presented on the side of high temperature. There is provided a crosslinked polyrotaxane at least two molecules of polyrotaxane consisting of cyclodextrin molecules having a linear molecule included in a skewed manner in cavities thereof and having capping groups at each end of the linear molecule so as to prevent detachment of the cyclodextrin molecules, the above at least two molecules of polyrotaxane crosslinked with each other via physical bonds, characterized in that the hydroxyls (—OH) of the cyclodextrin molecules are partially or wholly substituted with non-ionic groups.