U.S. patents available from 1976 to present. U.S. patent
applications available from 2005 to present.  MEMS based
retroreflector  Patent 7929195 Issued on April 19, 2011.
Estimated Expiration Date: Icon_subject November 10, 2025.
Estimated Expiration Date is calculated based on simple USPTO
term provisions. It does not account for terminal disclaimers,
term adjustments, failure to pay maintenance fees, or other
factors which might affect the term of a patent.
Abstract Claims Description Full Text  Patent References
Membrane light modulating systems Patent #: 5471341 Issued on:
11/28/1995 Inventor: Warde, et al.  Optical switch having an
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08/26/1997 Inventor: Lin, et al.  Micro-electromechanical (MEM)
optical resonator and method Patent #: 5903380 Issued on:
05/11/1999 Inventor: Motamedi, et al.  Method of making a
bistable micromagnetic light modulator Patent #: 6141139 Issued
on: 10/31/2000 Inventor: Furlani, et al.  Fast attenuator Patent
#: 646285