US Patent 7612635 - MEMS resonator with 2 I/O ports

http://www.freepatentsonline.com/7612635.html

This patent is from Kolo Technologies and includes some basic claims to a new type of micromachined ultrasonic transducer including multiple bidirectional input/output ports. Claim 1 reads:

1. A MEMS acoustic filter comprising:

a MEMS resonator; and

at least two acoustic I/O ports.