Static dissipative thermoplastic polymer composition
CA 2493818 A1 · Owner: E.I. Du Pont De Nemours And Company · Inventors: Hassink, William J.; Waggoner, Marion Glen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Static dissipative compositions containing thermoplastic polymers and having surface resistivities of about 104 to 1013 ohms/square can be readily and reproducibly made by mixing into the thermoplastic polymers specified amounts of carbon fiber and carbon black. The composition is useful for housings and other parts for shielding electronic equipment and components.
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
- Filed July 23, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 23, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 23, 2025.
- 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.