Detergent injection systems for carbon dioxide cleaning apparatus
CA 2373309 A1 · Owner: Deyoung, James P. · Inventors: Mcclain, James B.; Deyoung, James P.; Romack, Timothy J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for the controlled addition of detergent formulations and the like to a carbon dioxide cleaning apparatus comprises: a high pressure wash vessel (11); an auxiliary vessel (12); a drain line (13) connecting the auxiliary vessel to the wash vessel; optionally but preferably a separate vent line , (14) connecting the auxiliary vessel to the wash vessel; a detergent reservoir (15); and a detergent supply line (16) connecting the detergent reservoir to the auxiliary vessel. An advantage of this apparatus is that because the , detergent formulation can be pumped into the auxiliary vessel in a predetermined aliquot or amount, which predetermined aliquot or amount can then be …
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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 May 12, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 12, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 12, 2022.
- 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.