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:
Mar. 20, 2001
Filed:
Jul. 02, 1998
Richard B. Beard, Atco, NJ (US);
Kambiz Pourrezaei, Dresher, PA (US);
Shengke Zeng, Morgantown, WV (US);
Frederick Prout, Huntington Valley, PA (US);
Frank M. Kepics, Eagleville, PA (US);
Jin Park, Exton, PA (US);
Allen Rothwarf, late of Philadelphia, PA (US);
Siddharth Deliwala, Morrisville, PA (US);
Robert Schmukler, Rockville, MD (US);
Drexel University, Philadelphia, PA (US);
Abstract
The invention includes apparatus and method for detecting defects in various barrier materials including surgical gloves and food packaging. Voltage is applied across electrodes and a barrier material and the voltage measured and compared with voltage control measurements for the same barrier material without a defect. Sensitivity of measurements is increased by adjusting partial pressure across the barrier material which is subjected to the passage of an ionized gas detected by suitable instrumentation.