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:
Apr. 28, 1992
Filed:
Mar. 28, 1990
Stanley M Klainer, Henderson, NV (US);
Dileep K Dandge, Henderson, NV (US);
Kisholoy Goswami, Henderson, NV (US);
FiberChem Inc., Las Vegas, NV (US);
Abstract
A fiber optic chemical sensor is made water repellent by attaching a plurality of long, hydrophobic chains, e.g. silane polymers, to the surface. The chains extend from the surface and form a semi-permeable barrier which repels water molecules while selectively passing analyte molecules therethrough. In one configuration, the hydrophobic chains are attached substantially uniformly over the clad. In a second configuration, the clad is a plurality of spaced stripes with the hydrophobic chains attached in the gaps between the stripes. In another configuration, a patterned hydrophobic coating of alternating thick and thin segments is formed on the clad.