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:
Nov. 07, 2017
Filed:
Mar. 11, 2015
Sartorius Stedim Biotech Gmbh, Goettingen, DE;
Magnus Andreas Stering, Le mesnil le roi, FR;
SARTORIUS STEDIM BIOTECH GMBH, Goettingen, DE;
Abstract
A method of determining an internal volume (V) of a filter or bag device includes pressurizing the device to a first pressure (p) lower than a proof pressure by supplying a test gas, pressurizing the device to proof pressure (p), and at the same time, measuring the mass flow (m) or the volumetric flow of test gas, determining the gas temperature (T), and determining the internal volume (V) based on the equation for ideal gases, such that: V=m×R×T/(p−p) where V is the internal volume, m is the mass flow, R is the gas constant, T is the gas temperature, pis the proof pressure and pis the first pressure. A computer program product and a testing apparatus for performing the above-mentioned method also are provided.