Polybutylene terephthalate resin molded article having pictorial pattern formed thereon and process for preparation thereof
CA 2020276 A1 · Owner: Polyplastics Co. Ltd. · Inventors: Sano, Terutaka; Nedzu, Shigeru; Ebina, Yoichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A surface-patterned, injection-molded article of polybutylene terephthalate is produced by placing a film composed mainly of a polybutylene resin and back-printed with a desired graphic and/or indicia pattern in a mold cavity so that the printed surface of the film will be in contact with resin to be injected thereinto. Molten resin composed mainly of polybutylene terephthalate is then injected into the mold cavity to bond the pattern-printed film integrally onto a corresponding surface of the resulting molded PBT article.
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 June 29, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 29, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 29, 2012.
- 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.