Moulding process
CA 1062865 A · Owner: Rohm G.M.B.H. · Inventors: Monch, Theodor P.; Hanstein, Friedrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The Specification describes a process for the surface moulding of a sheet of thermoplastic synthetic resin which comprises compressing a laminate structure comprising the said sheet of thermoplastic synthetic resin at above the softening temperature of the said resin in contact with a perforated non-resilient sheet the opposite side of which is in contact with a sheet of resilient material, the pressure applied to the said structure being such that thermoplastic synthetic resin and resilient material are forced into the perforations of the said non-resilient sheet and come into mutual contact therein, the resulting surface moulded sheet of thermoplastic resin being cooled to below the …
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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
- Granted September 25, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 25, 1996.
- 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.