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Expired Canadian patentCanada

Ozone generator

CA 1103202 A · Owner: Gneupel, Arthur · Inventors: Gneupel, Arthur

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A substantially tubular-shaped ozone generator embodying an inner electrode, a coaxial outer electrode surrounding the inner electrode and a tube member formed of dielectric material arranged between the inner electrode and the outer electrode. Within the tube member formed of dielectric material there is arranged a substantially cylindrical core provided at its outer surface with one or a number of substantially helically-shaped grooves extending in the axial direction of the core and forming a throughpass channel for the medium to be ozonized and the ozone which is generated. -1-

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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 16, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 16, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 7, 1977
GrantedJune 16, 1981
Term endedJune 16, 1998
Patent numberCA 1103202 A
Classification (IPC)H01T19/00 +2 more

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedFeb 7, 1977Patent grantedJune 16, 1981Term endedJune 16, 1998

Sources & verification

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