Device for sampling a circulating fluid
CA 2002808 C · Owner: Mullis, James E. Sr. · Inventors: Mullis, James E. Sr.; Mullis, James E. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device is provided for sampling the contents of a pressurized circulating fluid system of a machine. The device is incorporated in a parallel fluid circuit and comprises a housing with an inlet to, and outlet from, a cavity. A filter is received within the cavity. When the filter becomes clogged a, differential pressure sensor provides an indication for an operator to close the inlet to the filter cavity drain the cavity, by means of a valve, and then remove the filter by removing a plug. The drained cavity fluid and filter may then be shipped to a lab for testing and the filter replaced and the inlet to the cavity reopened.
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 November 10, 1989 and granted February 20, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 10, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 10, 2011.
- 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.