Patent Yard Sign in
Expired Canadian patentCanada

Electro-fusion joint

CA 1308174 C · Owner: Mitsui Chemicals, Incorporated · Inventors: Uda, Naotake; Handa, Takayuki

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

The invention relates to an electro-fusion joint including a resin body and a heat-generating wire enbedded therein. The heat-generating wire supplied with electrical power generated heat so as to fuse the resin thereby connecting pipes which are inserted into the resin body. The resin body is provided with a mating connector formed integrally therewith and capable of bbeing connected to a connector which has a sensor. The mating connector has an integral coding portion adapted to be detected by the sensor. The code presented by the coding portion is read by the sensor and the data of the read code is delivered to a controller which determines the amount of the electrical power to be …

Read the whole patent

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 September 29, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 29, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 21, 1988
GrantedSeptember 29, 1992
Term endedSeptember 29, 2009
Patent numberCA 1308174 C
Classification (IPC)F16L47/02 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedOct 21, 1988Patent grantedSep 29, 1992Term endedSep 29, 2009

Sources & verification

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