Improved wax-free low moisture chewing gum
CA 2130569 C · Owner: Wm. Wrigley Jr. Company · Inventors: Synosky, Steven P.; Schnell, Philip G.; Mcgrew, Gordon N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wax-free, low moisture chewing gum is provided which is devoid or substantially free of wax. The chewing gum also contains less than 2.0 weight percent water and comprises a wax-free gum base which includes about 20 to about 60 weight percent synthetic elastomer, 0 to about 30 weight percent natural elastomer about 5 to about 55 weight percent elastomer plasticizer. about 4 to about 40 weight percent filler about 5 to about 40 weight percent softener and optional minor amounts of miscellaneous ingredients such as colors, antioxidants etc. Low moisture chewing gum compositions which contain the wax-free gum base are also provided.
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 2, 1993 and granted June 16, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 2, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 2, 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.