Electrical audio signal processing systems and devices – Electro-acoustic audio transducer
Reexamination Certificate
2007-07-17
2008-11-18
Kuntz, Curtis (Department: 2614)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
C029S594000, C029S025350, C310S800000, C310S366000, C427S100000
Reexamination Certificate
active
07454024
ABSTRACT:
Techniques for fabricating high frequency ultrasound transducers are provided herein. In one embodiment, the fabrication includes depositing a copperclad polyimide film, a layer of epoxy on the copperclad polyimide film, and a polyvinylidene fluoride film on the epoxy. The assembly of materials are then pressed to bond the polyvinylidene fluoride film to the copperclad polyimide film and to form an assembly. The polyvinylidene fluoride film being one surface and the copperclad polyimide film being the other surface. The area behind the copperclad polyimide film surface is filled with a second epoxy, and then cured to form an epoxy plug.
REFERENCES:
patent: 5166573 (1992-11-01), Brown
patent: 6784600 (2004-08-01), Klee et al.
Ketterling Jeffrey A.
Lizzi, legal representative Mary
Carter Ledyard & Milburn LLP
Kuntz Curtis
Nguyen Tuan D
Nowak Keith D.
Riverside Research Institute
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