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:
Oct. 30, 2007
Filed:
Sep. 27, 2004
Applicants:
Shih-yuan Wang, Palo Alto, CA (US);
M. Saif Islam, Mountain View, CA (US);
Alex Bratkovski, Mountain View, CA (US);
Inventors:
Shih-Yuan Wang, Palo Alto, CA (US);
M. Saif Islam, Mountain View, CA (US);
Alex Bratkovski, Mountain View, CA (US);
Assignee:
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 9/02 (2006.01); G02B 6/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A sensor apparatus includes a photonic crystal structure including a Mach Zehnder interferometer with a reference arm and a sensor arm configured to provide an evanescent field through a sensed medium region adjacent to the sensor arm.