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:
Aug. 11, 1998
Filed:
Sep. 30, 1996
Jamshed B Ghandhi, Carrboro, NC (US);
Becton, Dickinson and Company, Franklin Lakes, NJ (US);
Abstract
The present invention is directed to a method for measuring the shelf life of vacuum actuated tubes for blood sample collection, wherein the method comprises placing a collection tube in an apparatus having a first and a second sealable chamber, pressurizing the apparatus to a value above ambient pressure, and sealing both chambers such that each chamber has an identical pressure and is isolated from the other chamber. Leakage 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