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:
Apr. 30, 2013
Filed:
Feb. 20, 2009
Yoshinori Kakizawa, Kanagawa, JP;
Reiji Nishio, Kanagawa, JP;
Junji Michizoe, Shiga, JP;
Masakazu Koiwa, Shiga, JP;
Nobuo Ida, Kanagawa, JP;
Taisuke Hirano, Kanagawa, JP;
Yoichiro Koshi, Kanagawa, JP;
Yoshinori Kakizawa, Kanagawa, JP;
Reiji Nishio, Kanagawa, JP;
Junji Michizoe, Shiga, JP;
Masakazu Koiwa, Shiga, JP;
Nobuo Ida, Kanagawa, JP;
Taisuke Hirano, Kanagawa, JP;
Yoichiro Koshi, Kanagawa, JP;
Toray Industries, Inc., , JP;
Abstract
A microparticle includes an agglomerate of a hydrophilic active substance containing particle, which particle includes an amphiphilic polymer composed of a hydrophobic segment of poly(hydroxy acid) and a hydrophilic segment of polysaccharides or polyethylene glycol, and a hydrophilic active substance. It is characterized by an efficient inclusion of the hydrophilic active substance, and a release of the hydrophilic active substance at an appropriate speed in the human body, and is hence very useful as a DDS pharmaceutical preparation.