Apparatus for reducing the volume of synthetic resin
CA 2022365 A1 · Owner: Sasa, Eki · Inventors: Sasa, Eki; Nishimura, Keizi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for reducing the volume of synthetic resin comprises a cylinder having a volume reducing cylinder section and a pushing cylinder section, a driving shaft having a tapered shaft and a screw shaft, and a motor for driving the driving shaft. The volume reducing cylinder section has a tapered heat generating and volume reducing opening portion with its sectional area gradually increasing toward its open end. The tapered heat generating and volume reducing opening portion contains therein a tapered shaft having a tapered shape gradually extending in the synthetic resin delivery direction. The screw shaft is mounted so as to be movable in the axial direction and moving the screw, …
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 July 31, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 31, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 31, 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.