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. 13, 2003
Filed:
Aug. 12, 1999
Applicant:
Inventors:
Lilach Bonstein, Zichron Yaakov, IL;
Amnon Kritzman, Zichron Yaakov, IL;
Assignee:
Common Sense Ltd., Nazereth, IL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61F 1/315 ;
U.S. Cl.
CPC ...
A61F 1/315 ;
Abstract
A pH sensor for the visual or optical indication of the pH of a sample. The pH sensor includes a hydrophilic, optionally intrinsically charged or neutral, synthetic membrane and at least one pH indicator dye immobilized thereto, so as to prevent appreciated bleeding of the at least one indicator dye from the synthetic membrane upon immersion in an aqueous liquid.