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Expired Canadian patentCanada

Perforated absorptive pad and method of fabrication

CA 2116316 C · Owner: Schilcher, Stanley E. · Inventors: Schilcher, Stanley E.; Larsonneur, Lionel 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

An absorbent pad for use with meat and poultry products in retail sale packages has a laminated tissue absorbent mat sandwiched and sealed between upper and lower plastic sheets. The pad is perforated by penetration of perforating pins entirely through the pad to develop a series of holes for the passage of liquid from the meat package into the absorbent mat inside the pad. A myriad of outwardly projecting tufts of tissue material are developed along the underside of the pad by the perforating pins. These tufts develop a wicking effect which enhances the capillary action of the tissue layers inside the pad. Methods of fabrication of the individual pads and continuous linear absorbent sheet …

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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

  • Filed February 23, 1994 and granted December 2, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 23, 2014.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 23, 2016.
  • 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 23, 1994
GrantedDecember 2, 1997
Term endedFebruary 23, 2014
Patent numberCA 2116316 C
Classification (IPC)B65D81/26

Timeline

Timeline From CIPO dates

1995199719992001200320052007200920112013Application filedFeb 23, 1994Patent grantedDec 2, 1997Term endedFeb 23, 2014

Sources & verification

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