Nucleating agents (pore regulators) for the preparation of directly gassed thermoplastic foams
CA 1316352 C · Owner: Hilgert, Karl-Heinz · Inventors: Scholz, Dieter; Hilgert, Karl-Heinz; Kretzschmann, Gunther
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to new nucleating agents for the preparation of directly gassed thermoplastic foams. The new agents consist of a combination of citric acid, the salts or esters thereof and carbonate or bicarbonate and talc.
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
- Granted April 20, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 20, 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.