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. 27, 2015
Filed:
May. 16, 2007
Masayuki Kitagawa, Kita-ku, JP;
Keizou Ishikawa, Kita-ku, JP;
Keiichirou Yamamoto, Kita-ku, JP;
Kazutoshi Takashio, Kita-ku, JP;
Masao Shibata, Kita-ku, JP;
Masayuki Kitagawa, Kita-ku, JP;
Keizou Ishikawa, Kita-ku, JP;
Keiichirou Yamamoto, Kita-ku, JP;
Kazutoshi Takashio, Kita-ku, JP;
Masao Shibata, Kita-ku, JP;
Nippon Kayaku Kabushiki Kaisha, Tokyo, JP;
Abstract
A novel podophyllotoxin derivative, which is capable of releasing a drug without depending on biological enzymes and can be expected to have an effective therapeutic effect and is soluble in water has been demanded. A polymer having a polyethyleneglycol structural unit and two or more succinic monoamide structural units, particularly a polymer conjugate of a podophyllotoxin in which a carboxylic acid group of polyethyleneglycol/polyaspartic acid copolymer and a hydroxyl group of podophyllotoxin and linked via an ester bond is provided.