Microelectromechanical devices
CA 2496860 C · Owner: Schlumberger Technology Corporation · Inventors: Veneruso, Anthony F.; Lerche, Nolan C.; Brooks, James E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus includes a switch comprising microelectromechanical elements the microelectromechanical elements including a sealed chamber containing a dielectric element and conductors in the sealed chamber. The conductors are arranged such that application of greater than a predetermined voltage to at least one of the conductors causes ionization breakdown of the dielectric element to provide an electrically conductive path between the conductors. In another implementation a switch includes a nanotube electron emitter or a radioactive isotope electron emitter.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed February 10, 2005 and granted May 13, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 10, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.