High temperature paper containing aramid component
CA 2498579 A1 · Owner: Fibermark, Inc. · Inventors: Kinsley, Homan B. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Provided is a paper structure comprised of cellulose pulp fiber a polymeric , binder, and an aramid component comprised of aramid fiber and/or fibrid. The paper structure can also comprise multiple layers of different composition but at least one layer must comprise the aramid component and polymeric binder.
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 September 10, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 10, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 10, 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.