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:
Dec. 16, 2003
Filed:
Mar. 07, 1996
Applicant:
Inventors:
Jörg-Christian Hager, Cologne, DE;
Josef-Peter Löhr, Hilden, DE;
Manfred Dürr, Bergheim-Glessen, DE;
Assignee:
A. Natterman & Cie GmbH, Cologne, DE;
Primary Examiner:
Int. Cl.
CPC ...
A61K 9/127 ;
U.S. Cl.
CPC ...
A61K 9/127 ;
Abstract
An aqueous liposome system comprises at least one phospholipid, a non-phospholipidic substance which is a bile acid or derivative thereof, and, optionally, a non-toxic organic solvent. The mass ratio of phospholipid to the non-phospholidic substance is in the range between 1:0.001 and 1:0.1. The diameter of the liposomes formed in this liposome system is in the range between 35 and 90 nm. The liposome system is stable over large periods of time, e.g., several months or years, and is highly transparent. The liposomes may be loaded with a pharmaceutically active ingredient.