Apparatus for manufacturing biodegradable plant fibre products
CA 2384116 A1 · Owner: Primrose Holdings Limited · Inventors: Zhang, Wei
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention provides a molding apparatus for the molding of foamed fibre products. A plurality of upper and lower molds are provided on simultaneously rotating supports such that each co-operating pair of molds is open during a specific portion of the cycle of rotation. While open a previous product is , ejected, the molds may be cleaned and releasing agent introduced and further material introduced to the mold for a subsequent molding operation. The mold then closes and continues rotation.
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 September 7, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 7, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 7, 2021.
- 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.