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:
Sep. 12, 2000
Filed:
Nov. 21, 1997
Jamshed B Ghandhi, Carrboro, NC (US);
Becton, Dickinson and Company, Franklin Lakes, NJ (US);
Abstract
The present invention is directed to an apparatus for measuring gas permeation through test articles, such as evacuated tubes used for blood sample collection. The apparatus includes first and second sealable chambers, with the collection tube being placed in the first chamber. The apparatus is pressurized, and both chambers are sealed such that each chamber has an identical pressure and isolated from the other chamber. Permeation of gas into the collection tube located in the first chamber is detected as a differential pressure change relative to the second chamber. This change in pressure is recorded and is indicative of the rate of gas transport into the collection tube.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile