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:
Jul. 07, 1998
Filed:
Dec. 22, 1994
Applicant:
Inventor:
Todd D Alband, Eagan, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65D / ;
U.S. Cl.
CPC ...
12820023 ; 2224021 ;
Abstract
A dual seal configuration for an aerosol canister containing a medicinal aerosol formulation. The canister includes a vial body and valve ferrule sealed by first and second sealing members to form a chamber that contains the medicinal aerosol formulation. The dual seal configuration reduces leakage of contents, and is particularly helpful where the formulation includes hydrofluorocarbon propellant and an ethanol cosolvent. The first seal can be selected to be a barrier to the formulation components, while the second seal can be relatively more labile to such components.