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:
Jan. 01, 2002
Filed:
Feb. 24, 1999
Applicant:
Inventors:
Neville John Freeman, Sandback, GB;
Graham Hugh Cross, Darlington, GB;
Assignee:
Farfield Sensors Limited, Manchester, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 9/02 ;
U.S. Cl.
CPC ...
G01B 9/02 ;
Abstract
A chemical sensor includes at least two wave guides, one of which is a sensing wave guide and one of which is a reference wave guide. Each of the wave guides are formed in a laminar manner on a substrate.