Tool for use in applying filler material to an endodontically prepared root canal
CA 1302129 C · Owner: Johnson, William B. · Inventors: Johnson, William B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A tool for use in applying filler material such as, gutta-percha or the like, to an endodontically prepared root canal of a tooth in the form of an elongated shaft of material having high biological tolerance the shaft, having a handle portion at the proximal end the shaft, being adaptable to receive filler material formed thereon formed into a conical configuration so that the shaft having the filler material thereon may be positioned in the root canal and the shaft thereafter severed by applying force to the handle portion to retain the portion of the shaft and the filler material within the root canal.
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
- Granted June 2, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 2009.
- 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.