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. 28, 2009
Filed:
Dec. 12, 2003
Kazuhiro Kubo, Kanagawa, JP;
Chika Itoh, Kanagawa, JP;
Syunsuke Ohhashi, Kanagawa, JP;
Tohru Yasukohchi, Kanagawa, JP;
Yusuke Ohkawa, Kanagawa, JP;
Hiroshi Kikuchi, Tokyo, JP;
Norio Suzuki, Chiba, JP;
Miho Takahashi, Shizuoka, JP;
Hitoshi Yamauchi, Tokyo, JP;
Kazuhiro Kubo, Kanagawa, JP;
Chika Itoh, Kanagawa, JP;
Syunsuke Ohhashi, Kanagawa, JP;
Tohru Yasukohchi, Kanagawa, JP;
Yusuke Ohkawa, Kanagawa, JP;
Hiroshi Kikuchi, Tokyo, JP;
Norio Suzuki, Chiba, JP;
Miho Takahashi, Shizuoka, JP;
Hitoshi Yamauchi, Tokyo, JP;
NOF Corporation, Tokyo, JP;
DAIICHI Pharmaceutical Co., Ltd., Tokyo, JP;
Abstract
A phospholipid derivative represented by the following formula (1): wherein [PG]k represents a residue of polyglycerin having a polymerization degree of k, wherein k is 2 to 50, RCO and RCO independently represent an acyl group having 8 to 22 carbon atoms, symbol 'a' independently represents an integer of 0 to 5, symbol 'b' independently represents 0 or 1, M represents hydrogen atom, an alkali metal atom, an ammonium, or an organic ammonium, and k1, k2, and k3 represent numbers satisfying the following conditions: 1≦k1≦(k+2)/2, 0≦k2, and k1+k2+k3=k+2. The phospholipid derivative is highly safe for living bodies and can be suitably utilized in drug delivery systems such as liposome, and the like.