Electrically dissipative composite
CA 2129443 A1 · Owner: Huang, Hua-Feng · Inventors: Huang, Hua-Feng
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A heat-sealable oil-resistant, static-dissipative packaging composite consisting essentially of 95.5-97.5 wt % ionomer and 4.5-2.5 wt % electroconductive carbon powder having a surface area of 1000-1500 m2/gm and a pore volume of 480-510 ml/100 gm. The composite is useful for protective packaging of electrostatic sensitive electronic components and assemblies.
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 August 20, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 20, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 20, 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.