Three-axis superconducting gravity gradiometer
CA 1321482 C · Owner: University Of Maryland, College Park · Inventors: Paik, Ho Jung
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A three-axis gravity gradiometer including three component gravity gradiometers arranged in mutually orthogonal directions, wherein each component gradiometer includes a pair of accelerometers each defining a sensitive axis. Each accelerometer includes a generally cylindrical proof mass made of a superconducting material. Each proof mass includes annular upper and lower hollowed out portions longitudinally surrounded by a generally cylindrical exterior wall. Common mode and differential mode sensing coils are arranged adjacent a bottom-side surface of a portion of the proof mass in one hollowed out annular portion and a levitation coil is arranged adjacent a bottom-side surface of the proof …
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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
- Granted August 24, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 24, 2010.
- 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.