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. 01, 1991
Filed:
Jun. 08, 1990
Applicant:
Inventor:
Steven Lehigh, Croydon, GB;
Assignee:
Phares Pharmaceutical Research NV, Curacao, AN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61L / ; A61K / ; B01J / ;
U.S. Cl.
CPC ...
424 45 ; 424450 ; 264-41 ; 264-44 ;
Abstract
Pro-liposome compositions comprise membrane lipids such as lecithin or distearyl dimethylammonium chloride, water-miscible solvents such as ethanol, optionally a minor proportion of water, and optionally fatty acid esters and drugs. In addition to excess water they spontaneously form dispersions of liposomes having high void volumes and high drug entrapment ratios. Aerosol compositions are presented in a volatile liquid propellant. On being sprayed they form an aerosol of droplets which, on contact with aqueous media, spontaneously form liposome dispersions.