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:
Mar. 31, 2009
Filed:
Jul. 19, 2007
Alexandre Blander, Pierrefonds, CA;
Richard Brassard, Shefford, CA;
Carl Savard, Bromont, CA;
Julien Sylvestre, Chambly, CA;
Alexandre Blander, Pierrefonds, CA;
Richard Brassard, Shefford, CA;
Carl Savard, Bromont, CA;
Julien Sylvestre, Chambly, CA;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method of using acoustic signals in the form of waves or pulses to non-destructively measure the thickness of a bonding layer sandwiched between and bonding together overlying and underlying materials different from the bonding layer especially when the thickness of the bonding layer is so small that the features (maxima, minima, time position) of the echo from the interface of the bonding layer and the overlying material is indistinguishable, i.e., not independently observable from the features (maxima, minima, time position) of the echo from the interface of the bonding layer and the underlying material.