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:
Jun. 24, 2014
Filed:
Mar. 26, 1999
Applicant:
Terry J. Wickland, Evergreen, CO (US);
Inventor:
Terry J. Wickland, Evergreen, CO (US);
Assignee:
Nuclear Filter Technology, Inc., Golden, CO (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 53/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
Vents for containers include a perforated substrate portion () of polymer material over which is thermally bonded a gas permeable membrane (). The thermal bond () is direct and adhesive-free so that there is no adhesive available for chemical attachment by materials within the containers () and no opportunity for an adhesive to interfere with or block perforations through the substrate.