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Expired Canadian patentCanada

Method and apparatus for controlling the growth of non-osseous non-cartilaginous solid connective tissue

CA 1333630 C · Owner: Liboff, Abraham R. · Inventors: Mcleod, Bruce R.; Liboff, Abraham R.; Smith, Stephen D.

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Abstract From the Canadian patent

An apparatus and method for regulating the growth of connective tissue proper in vivo are provided. The apparatus includes a magnetic field generator and a magnetic field detector for producing a controlled, fluctuating, directionally oriented magnetic field parallel to a predetermined axis projecting through the target tissue. The field detector samples the magnetic flux density along the predetermined access and provides a signal to a microprocessor which determines the average value of the flux density. The applied magnetic field is oscillated at predetermined frequencies to maintain a preselected ratio of frequency to average flux density. This ratio is maintained by adjusting the …

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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 December 20, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 20, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 27, 1989
GrantedDecember 20, 1994
Term endedDecember 20, 2011
Patent numberCA 1333630 C
Classification (IPC)A61N2/00 +1 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedSep 27, 1989Patent grantedDec 20, 1994Term endedDec 20, 2011

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