Thermoplastic and thermoset polymer compositions
CA 1339474 C · Owner: Work, William James · Inventors: Dunkelberger, David Lamar; Work, William James; Wu, Jiun-Chen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thermoplastic or thermoset polymer composition comprises a thermoplastic or thermoset matrix polymer and substantially spherical polymer particles having an average diameter of from 2 to 15 micrometers and a, particle size distribution such that at least 90% by weight of the particles fall within ~ 20% of the average particle diameter. The polymer compositions are light-scattering and/or have a reduced-gloss or matt surface finish.
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 September 23, 1997. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 23, 2014.
- 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.