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:
Mar. 02, 1993
Filed:
Jun. 26, 1991
Applicant:
Inventors:
Peter R Byron, Richmond, VA (US);
Richard N Dalby, Richmond, VA (US);
Assignee:
Virginia Commonwealth University, Richmond, VA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; A61M / ; C09K / ;
U.S. Cl.
CPC ...
12820014 ; 12820023 ; 12820315 ; 12820323 ; 222635 ; 252305 ; 424 45 ; 424 46 ;
Abstract
Aerosol formulations for use in metered dose inhalers are disclosed which include 1,1,1,2-tetrafluoroethane alone and in combination with other compounds as well as various hydrocarbon blends. The density, vapor pressure, flame extension characteristics, dispersability of medicant, dissolvability of surfactant, respirable fraction, and compatibility elastomer seals for the aerosol formulations have been examined. The aerosol formulations are attractive alternatives to chlorofluorocarbon based aerosols since they do not deplete the ozone layer.