Fluid filter
CA 2174103 C · Owner: Beier, Scott B. · Inventors: Beier, Scott B.; Adams, Rex A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fluid filter (10) includes a first batting (12) of high loft non-woven, fibrous fluid-permeable material with a plurality of openings (14) formed through the thickness thereof across the length and width of the batting. A second layer (16) of high loft non-woven, fluid-, permeable fibrous batting is attached to the first layer (12) and extends across the entire length and width of the first layer (12). Preferably the first and second layers are adhered together to form a single integral fluid filter (10). In the preferred form of the invention the openings, in the first batting have side walls (48) which are perpendicular to the upper surface (36) of the batting such that fluid flow …
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 October 18, 1994 and granted April 23, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 18, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 18, 2016.
- 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.