Reusable spin-on multi system oil filter and method of reclaiming used filter canisters
CA 2255776 A1 · Owner: Leo, Ano · Inventors: Leo, Ano
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is a spin-on type filter with a reclaimed permanent filter casing and permanent filtering media that are washable and reusable. There are three distinct progressive filtering systems that function simultaneously but , separately within one filter housing one is the full flow filtering at 10 , micron capability while the other is in its bypass fine filtering mode at 1 to 3 micron filtering capability. In addition a safety full flow filter can be , activated to filter the return oil while the main full flow medium is fouled. Each system can be implemented with multiple media. The main body of the filter, which comprises the filter head and the media can be separated easily …
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 May 23, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 23, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 23, 2019.
- 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.