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:
May. 26, 1998
Filed:
Apr. 30, 1996
Applicant:
Inventors:
Michael Dror, Parker, CO (US);
Robert F Baugh, Parker, CO (US);
Assignee:
Medtronic, Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
204418 ; 422 8203 ;
Abstract
An ion selective electrode membrane is selective to polyions in a limited molecular weight range. The membrane is formed by a heparin polyion selective polymeric layer and an outer filter layer permeable to polyions of limited molecular weight range. The outer filter may be cellulose acetate while the polyion selective membrane is a polyvinyl chloride containing plasticizer and a quaternary ammonium salt.