Dental treatment system
CA 2132972 A1 · Owner: Gallant, Ben J. · Inventors: Gallant, Ben J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system of treating teeth or associated tooth structure uses an abrasive-laden fluid. Fluid (101) at different selected pressures (103) is delivered to a device (105) for mixing the fluid with abrasive. The air/abrasive mix flows through a hand-held device (107) to the point of treatment. A selective control (107 191), delivers air or air and abrasive as desired. Upon termination of an air/abrasive treatment, air is diverted through a purge line (214) to purge the system downstream from the abrasive device. A vacuum (221) removes abrasive and debris from the patient's mouth during and after the abrasive treatment. A hand-held nozzle device (107) has finger controlled fluid ports …
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 March 26, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 26, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 2015.
- 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.