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:
Aug. 27, 2002
Filed:
Feb. 23, 2001
Abstract
The invention relates to sensor membranes for determining oxygen concentrations and to a process for the preparation thereof, in which, in a polymer matrix which is permeable to oxygen, an indicator is present whose optical and physicochemical properties can be influenced by the respective analytes. Starting from the disadvantages of known sensor membranes, it is the object of the invention to provide a sensor membrane which is thermally and also dimensionally stable, and can be prepared simply and flexibly. This object is achieved according to the invention in that the polymer matrix which contains the optical oxygen indicator is formed from a polymer containing sulfur, preferably in the main chain, particularly preferably containing sulfide and/or sulfone functionalities in the main chain.