Reduced cost process for producing customized thermoplastic resins
CA 2232108 A1 · Owner: Tuttle, Mary E. · Inventors: Tuttle, Mary E.; Hurley, James M.; Brian, Bernd B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a customized thermoplastic resin having a thermoplastic resin body and a coating on the thermoplastic resin body. The coating contains a hydrophobic resin component and at least one additive. The hydrophobic resin component of the coating has an onset temperature for its melt processing range below the onset temperature for the melt processing range of the thermoplastic resin body. The customized thermoplastic resins of the invention may be produced more efficiently than conventional customized thermoplastic resins, while the customized thermoplastic resins of the invention may be used in the same methods as conventional materials to produce many useful articles.
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 April 17, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 17, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 17, 2020.
- 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.