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. 19, 2010
Filed:
Mar. 23, 2005
Applicant:
Todd W. Murray, Brookline, MA (US);
Inventor:
Todd W. Murray, Brookline, MA (US);
Assignee:
The Trustees of Boston University, Boston, MA (US);
Primary Examiner:
Int. Cl.
CPC ...
G01B 9/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
Apparatus for analyzing thin surface layers. An acoustic wave generating laser beam is amplitude modulated with continuous wave modulation of a frequency in the megahertz to gigahertz range and an optical system directs the modulated radiation to a surface of a thin surface layer. This in turn causes an acoustic wave that is sensed and analyzed to provide an indication of properties of thin surface layer.