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:
Feb. 20, 2001
Filed:
Jan. 21, 1998
Joseph Berger, Muttenz, CH;
Thomas C. Collins, Milford, MA (US);
Rudolf E. Slovacek, Norfolk, MA (US);
Other;
Abstract
Optical sensor formulations comprising polymeric sensing formulations and methods of predictably making optical sensor formulations, for, e.g., measuring O,levels in patient blood samples. These formulations may be, e.g., deposited as a membrane on light-transmissive substrates. In an embodiment, O,-sensing formulations may be made by a process including selecting a first homopolymer comprised of first monomeric units, the first homopolymer having a first Perm,value; selecting a second homopolymer comprised of second monomeric units, the second homopolymer having a second Perm,value that is different from the first Perm,value; and copolymerizing the first and second monomeric units to obtain a copolymer having an intermediate Perm,value, i.e., between the two Perm,values, the intermediate Perm,providing the desired Perm,for the desired oxygen sensing formulation. By adjusting the relative amounts of the first and second monomeric units, a series of polymers having a desired range of intermediate permeability values (and hence Stem-Volmer characteristic k,values) may be obtained.