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:
Dec. 22, 2009
Filed:
Sep. 24, 2003
Stephen B. Roscoe, St. Paul, MN (US);
Neal A. Rakow, Woodbury, MN (US);
Michael L. Husberg, West St. Paul, MN (US);
Lester H. Mcintosh, Iii, Green Lane, PA (US);
Stephen B. Roscoe, St. Paul, MN (US);
Neal A. Rakow, Woodbury, MN (US);
Michael L. Husberg, West St. Paul, MN (US);
Lester H. McIntosh, III, Green Lane, PA (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A system for measuring diffusion of a compound across a membrane generally comprises a membrane held between a first base having a plurality of outwardly extending hollow projections and a second base fastened to the first base and having a plurality of recessed tapered openings therein adapted to engage the plurality of hollow projections. Methods for measuring membrane diffusion using such systems are included. The system components are also provided in kit form.