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:
Oct. 28, 1986
Filed:
Jan. 29, 1985
Applicant:
Inventor:
Helmut Hauser, Uerikon, CH;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
264-41 ; 264-43 ; 424 38 ; 4284022 ; 436829 ;
Abstract
The present invention relates to a novel advantageous process for the preparation of unilamellar liposomes in aqueous phase by converting a suitable lipid component, e.g. phosphatidic acid, into the ionic form by subjecting the lipid dispersion to a change in pH value and subsequently neutralizing it. Formation of the unilamellar liposomes is spontaneous, i.e. it takes place without additional external supply of energy. The liposomes obtainable by the process of this invention can be used therapeutically as carriers for drugs of the most widely different kind.