Co2 jet spray system employing a thermal co2 snow plume sensor
CA 2135231 C · Owner: Boc, Inc. · Inventors: Palombo, Mario P.; Driggs, Matthew G.; Brandt, Werner V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
CO2 jet spray cleaning apparatus (10) that monitors CO2 snow plume characteristics. The present invention is a CO2 jet spray cleaning system (10) that comprises a holding tank (12) for containing liquid CO2 (15) a spray nozzle (14), coupled to the holding tank (12) a valve (13) coupled between the holding tank (12) and the spray nozzle (14), and a temperature sensor (11) coupled to the nozzle (14) for sensing the temperature of a plume (16) of CO2 that is sprayed by the nozzle (14) and for providing a signal indicative thereof. The system (10) may also comprise a display (17) coupled to the temperature sensor (11) for displaying the temperature of the plume (16) of CO2 to an operator, or an …
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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 7, 1994 and granted March 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 7, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 7, 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
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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.