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Expired Canadian patentCanada

Fiber-optic transducer apparatus

CA 1237914 A · Owner: Camino Laboratories, Inc. · Inventors: Knute, Wallace L.; Bailey, Wilber H.

CIPO record

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Abstract From the Canadian patent

A fiber-optic transducer apparatus and a, related method of manufacturing it for particular use in, medical applications such as invasive blood pressure and body temperature measurement. The apparatus includes a catheter comprised of a sheath and an enclosed first set of optical fibers for transmitting a light beam to and from the remote end of the catheter, where a transducer modulates it in accordance with the variable to be measured, e.g. blood pressure. A photosensor located at the near end of the catheter measures the modulated intensity of the returned beam, to produce a corresponding measurement signal. The catheter is further comprised of a second set of optical fibers located …

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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 June 14, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 14, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 25, 1984
GrantedJune 14, 1988
Term endedJune 14, 2005
Patent numberCA 1237914 A
Classification (IPC)G01N21/00 +2 more

Timeline

Timeline From CIPO dates

1985198819911994199720002003Application filedMay 25, 1984Patent grantedJune 14, 1988Term endedJune 14, 2005

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