Process and device for the manufacture of compression-molded articles from thermoplastic compound
CA 1317733 C · Owner: Keller, Gerhard · Inventors: Iseli, Andreas; Keller, Gerhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a process for the manufacture of molded articles made from thermoplastic molding compound, by heating of the latter molding of, a blank by means of an annular if need be, die; sepa-, ration of the blank by using a heated stream of gas such stream of gas surrounding the die and being directed at the point of separation; introduction of the blank in a compression-molding mold; closing of the mold; shaping of the compressed article by application of a compression pressure; and cooling of the molded article at least partly under pressure. According to the invention the total amount of heated, thermoplastic molding compound needed for a blank is deposited on the surface …
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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 May 18, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 18, 2010.
- 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.