Low modulus structural foam
CA 1253294 A · Owner: General Electric Company · Inventors: Liu, Nan-I
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Foamable low-modulus thermoplastic compositions are prepared by incorporating suitable chemical blowing agents in low-modulus polymers. Specifically low-, modulus copolyetherester compostions may be foamed by use of citric acid, sodium bicarbonate or mixtures thereof as blowing agents.
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 25, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 25, 2006.
- 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.