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Expired Canadian patentCanada

Drip coffee making kit

CA 1235307 A · Owner: Jennings, Robert M. · Inventors: Karns, Albert L.; Jennings, Robert M.

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

Upper and lower downwardly and upwardly opening caps are provided and removably telescopingly engageable over the upper and lower ends of an upstanding tubuar body. The body includes a mid-height partition having a central drain opening therein and electrical resistance heating structure as disposed within the body for heating liquid therein above the partition. Valve structure is provided for opening and closing the drain opening and one side portion of the body below the partition has an access opening therein. An upwardly opening filter basket is provided and insertable inwardly of and withdrawable outwardly through the access opening and the body and basket include coacting structure …

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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 April 19, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 19, 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.
FiledFebruary 19, 1985
GrantedApril 19, 1988
Term endedApril 19, 2005
Patent numberCA 1235307 A
Classification (IPC)A47J31/04

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedFeb 19, 1985Patent grantedApril 19, 1988Term endedApril 19, 2005

Sources & verification

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