Expired Canadian patentCanada
Felted pad based on fibers of cellulose and of organic microporous membrane
CA 1313734 C · Owner: Knight, Rodney A. · Inventors: Fiore, Joseph V.; Marinaccio, Paul J.; Knight, Rodney A.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is described a felted pad comprising fibers of cellulose and fibers of an organic microporous membrane having a surface modifying agent bonded to substantially all of the wetted surfaces thereof.
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 February 23, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 23, 2010.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 10, 1984
GrantedFebruary 23, 1993
Term endedFebruary 23, 2010
Patent numberCA 1313734 C
Classification (IPC)B01D71/56
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.