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Expired Canadian patentCanada

Energy saving technique for battery powered inductor

CA 1266302 C · Owner: Pinckaers, B. Hubert · Inventors: Pinckaers, B. Hubert

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Disclosed is a battery powered portable bone stimulator which includes a battery source of power a, device for temporarily storing power circuitry for, generating stimulating pulses utilizing the device of storing power, and a medical treatment inductor coil for interaction with the body of a patient. The invention includes an arrangement for recovering power during collapse of the magnetic field of the coils as current decreases and for directing such power to the device for temporarily storing power. In one embodiment, energy from batteries is stored in a capacitor. The capacitor is discharged to provide a high current pulse for driving the coil. Energy from this current flow is stored as …

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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 February 27, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 27, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 29, 1985
GrantedFebruary 27, 1990
Term endedFebruary 27, 2007
Patent numberCA 1266302 C
Classification (IPC)A61N1/40

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedMarch 29, 1985Patent grantedFeb 27, 1990Term endedFeb 27, 2007

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.