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. 13, 2001
Filed:
May. 10, 2000
Pankaj Maganlal Vadgama, Manchester, GB;
Geraldine Patricia Rigby, Merseyside, GB;
Sayed Ahmed, Blackburn, GB;
Sensalyse Holdings Limited, Manchester, GB;
Abstract
Sensor devices, and analytical methods using them, employing a detector protected from direct contact with samples being examined by a membrane made of a polyurethane modified with a non-ionic surfactant. The detector is preferably an electrode of conventional type (e.g. plantinum metal, optionally with pseudo, counter or reference electrodes) but especially an enzyme electrode. The surfactant may be incorporated into the polyurethane by admixture or by reacting chemically with the polyurethane, and is preferably a condensate of ethylene oxide with a compound containing a hydrophobic moiety—especially with a hydroxy-compound, e.g. an alkylated phenol, fatty alcohol or a sorbitan ester. Conveniently, the polyurethane membrane may contain up to 20 parts per 100 of polyurethane and be up to 10 microns thick, and formed by dip-coating an electrode. Measurements, using electrodes, may be made amperometrically.