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Expired Canadian patentCanada

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CA 1270233 C · Owner: W.R. Grace & Co.-Conn. · Inventors: Odabashian, Robert A.

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 display package comprises a product received in a receptacle formed from a single sheet of heat shrinkable single-fold, flexible, heat sealable thermoplastic sheet material. The receptacle comprises a shrunken portion wherein the sheet material is shrunken and conforms generally to the shape of the product; and, an unshrunken portion separated from the shrunken portion by a heat seal and having a line of weakness along which an opening tear may be initiated.

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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 12, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 12, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 27, 1986
GrantedJune 12, 1990
Term endedJune 12, 2007
Patent numberCA 1270233 C
Classification (IPC)B65D81/00 +2 more

Timeline

Timeline From CIPO dates

1987199019931996199920022005Application filedJune 27, 1986Patent grantedJune 12, 1990Term endedJune 12, 2007

Sources & verification

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