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. 01, 2005
Filed:
Mar. 12, 2003
Michael L. Peterson, Jr., Orono, ME (US);
Anthony Dileo, Westford, MA (US);
Zong Mu Wang, Old Town, ME (US);
Alan Greenberg, Boulder, CO (US);
Michael L. Peterson, Jr., Orono, ME (US);
Anthony DiLeo, Westford, MA (US);
Zong Mu Wang, Old Town, ME (US);
Alan Greenberg, Boulder, CO (US);
Millipore Corporation, Billerica, MA (US);
Abstract
Plate waves are used to determine the presence of defects within a porous medium, such as a membrane. An acoustic wave can be propagated through a porous medium to create a plate wave within the medium. The plate wave creates fast compression waves and slow compression waves within the medium that relate to the material and structural properties of the medium. The fast compression wave provides information about the total porosity of a medium. While the slow compression wave provides information about the presence of defects in the medium or the types of materials that form the medium.