Dental probe
CA 1339296 C · Owner: Thatcher, G. Lawrence · Inventors: Thatcher, G. Lawrence; Loewenthal, Bernard, D.D.S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A dental probe is disclosed for use in detecting periodontal disease and gingivitis. The probe includes an elongate member having a distal end with a double-tapered flexible plastic tip thereon; the distal end has a first portion indicating a non-diseased condition and a second portion indicating a diseased condition the first portion, being disposed between the tip of the distal end and the second portion, the second portion being disposed adjacent to the first portion. The invention also includes a method using the dental probe for diagnosing periodontal disease and gingivitis.
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 August 19, 1997. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 19, 2014.
- 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.