Dual gum base bubble gum
CA 2067547 A1 · Owner: Panhorst, Dorothy A. · Inventors: Reggio, Richard A.; Panhorst, Dorothy A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A bubble gum made with SBR (styrene butadiene) gum base has both its initial bite and bubble quality improved by coblending PIB (polyisobutylene) gum base with the SBR base at a weight ratio of SBR:PIB of between 2:1 and 6:1 and, preferably 3:1 to 4:1. The bubble gum may be naturally sweetened or sugarless and preferably contains hydrogenated starch hydrolysate (HSH).
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 April 29, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 29, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 29, 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.