Filter device with non-by pass edge seal
CA 1318492 C · Owner: Pall, David Boris · Inventors: Pall, David Boris
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for making filters with a nonbypassing peripheral seal which comprises heating a cylindrical filter housing to expand its internal diameter; inserting a filter disc that has a diameter larger than that of the internal diameter of the housing when cold; and allowing the assembly to cool.
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 June 1, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 1, 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.
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.