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:
May. 11, 1999
Filed:
Jun. 24, 1997
Applicant:
Inventor:
Larry J Mattson, Charlotte, NC (US);
Assignee:
Roberts PolyPro, Inc., Charlotte, NC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B65D / ;
U.S. Cl.
CPC ...
215261 ; 215308 ; 215329 ; 215902 ;
Abstract
A vented closure is provided in which a PTFE membrane layer comprises a vent for releasing accumulated gas pressure. The membrane is carried on a structural support which may vary from a fabric type backing to a porous plastic stem, the support permitting a variety of improved vent architecture to be utilized including vents with reduced material requirements, improved geometry, and better handling characteristics.