Food tray
CA 1305038 C · Owner: Deyrup, Edward Johnson · Inventors: Deyrup, Edward Johnson
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composite structure comprising at least one core layer comprising polyethylene terephthalate and at least one outer layer on each side of the core layer, comprising polyethylene terephthalate and about 10 to about 60 percent glass flake, based on the weight of the outer layer, provides thermoformed articles with good high temperature stiffness and good surface properties.
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 July 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 14, 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.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.