Uniform minimum-permeability woven fabric, filter and process therefor
CA 1282014 C · Owner: White, Lloyd R. · Inventors: Forester, Roger J.; White, Lloyd R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A high temperature stable woven fiber fabric has uniform gas permeability of less than 1.5 L/M/cm2 and is capable of withstanding at least 10,000 cycles in a Bally? Flexometer test without failure. An untreated fabric is subjected to a sequential process which provides uniform permeability and greater flexibility and acid resistance to the treated fabric. The treated fabric is particularly useful in high temperature applications such as filter elements and furnace curtains.
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 March 26, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 26, 2008.
- 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.