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. 17, 2007
Filed:
Dec. 15, 2004
Applicants:
Hwa-yaw Tam, Hong Kong, HK;
Helen L. W. Chan, Hong Kong, HK;
Bai-ou Guan, Hong Kong, HK;
Inventors:
Assignee:
The Hong Kong Polytechnic University, Kowloon, HK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01H 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An ultrasound sensor consists of an optical fiber having an active portion with high birefringence and two non-active portions located at each end of the active portion. A bragg grating is provided in the fiber. An ultrasound measurement device includes an ultrasound sensor with an excitation source for the fiber and an analysis unit connected to the fiber.