Conductive polymer composition
CA 1302609 C · Owner: Barma, Pradeep · Inventors: Barma, Pradeep; Rosenzweig, Nachum
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Conductive polymer compositions comprising a matrix polymer and a conductive particulate filler dispersed in the matrix polymer. At least some of the filler particles comprise a polymer and a homogeneous filler eg. carbon black, dispersed therein. Preferably the filler is highly cross-linked so that it has a hot modulus of at least 250 psi (17.5 kg/cm2) and is then dispersed in a melt-shapeable polymer. In this way it is possible to make conductive polymer compositions of high resistivity, eg. at least 1,000 ohm-cm with a high, degree of reproduceability. Alternatively the matrix, polymer has a hot modulus of at least 250 psi (17.5 kg/cm2) and is sintered.
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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 June 2, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 2009.
- 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.