Chewing gum
CA 1188619 A · Owner: Indiana University Foundation · Inventors: Ream, Ronald L.; Moore, David M.; Kleber, Carl J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved chewing gum capable of cleaning and imparting a high degree of polish to the teeth comprises a chewing gum base, at least one non-toxic source of acid, and calcined kaolin particles the, median diameter of which is about 2 micrometers or less, substantially all of the particles being less than about 20 micrometers in diameter. Such a chewing gum cleans and imparts a high degree of polish to the teeth without unduly abrading or scratching them. When regularly chewed such a gum, in addition to cleaning and polishing the dental enamel, also inhibits the reformation of dental plaque.
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 11, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 11, 2002.
- 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.