All polyester film composite
CA 2059982 A1 · Owner: Newton, John Robert · Inventors: Newton, John Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Z/H.36109Z, Abstract, The present invention relates to an all polyester composite film structure having: (a) an opaque, biaxially oriented polyester support core film, (b) a clear, biaxially oriented polyester top film and (c), a first pair of dye receptive or printable receiver films that can be heat sealed together and sandwiched between the top surface of the core film and one surface of the top film wherein at least one surface of a receiver film of the first pair of receiver films is printed with a dye to form printed matter.
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
- Filed January 24, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 24, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 24, 2014.
- 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.