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Expired Canadian patentCanada

Automotive ceiling panel and process for manufacturing same

CA 1091724 A · Owner: Toyota Jidosha Kabushiki Kaisha · Inventors: Sakamoto, Tatsuo; Nomura, Takao; Umemoto, Yoshiro

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Abstract From the Canadian patent

An automotive ceiling panel and a process for manufacturing the same and more particularly to a process which, reduces the weight of the panel and the man-hours required for the manufacture thereof and yet results in an improvement in the quality of the panel. The ceiling panel comprises a laminate of a first polyethylene foam layer having an aesthetically designed crimp-pattern in its layer surface a second metal lath, laid under the first polyethylene foam layer and a third layer, of polyethylene foam laid under the metal lath. The metal lath is sandwiched between the polyethylene foam layers with the, crimp-pattern appearing on the top surface of the panel. A process of manufacturing 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 16, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 16, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 15, 1976
GrantedDecember 16, 1980
Term endedDecember 16, 1997
Patent numberCA 1091724 A
Classification (IPC)B62D25/06 +2 more

Timeline

Timeline From CIPO dates

1977198019831986198919921995Application filedDec 15, 1976Patent grantedDec 16, 1980Term endedDec 16, 1997

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