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Expired Canadian patentCanada

Lightweight container

CA 1163584 A · Owner: Continental Group, Inc. (The) · Inventors: Kubis, Charles S.; Roth, Donald J.; Walter, John

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 novel pressure holding container formed of thin sheet metal of the order of between 10 and 4 mils wherein the container has a bottom portion and a top portion the, bottom portion having a body and an integral bottom and, in one embodiment having a necked-in upper end of the body which tightly fits into a lip portion of the lower end of the top portion and is adhesively bonded thereto and wherein the upper portion of the top portion has a toro-conical shape which under pressure wants to expand it into a spherical shape and thus through beam loading on the lip portion imposes compressive stresses thereon and holds in compression the adhesive which is interposed between the lip and 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 March 13, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 13, 2001.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 25, 1981
GrantedMarch 13, 1984
Term endedMarch 13, 2001
Patent numberCA 1163584 A
Classification (IPC)B65D41/00 +2 more

Timeline

Timeline From CIPO dates

1982198419861988199019921994199619982000Application filedSep 25, 1981Patent grantedMarch 13, 1984Term endedMarch 13, 2001

Sources & verification

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