Improved ball structure
CA 2244295 A1 · Owner: Wang, Hsin-Wei · Inventors: Wang, Hsin-Wei
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention is "an improved ball structure," which primarily comprises an inflation nozzle an inflatable ball consisting of a inner rubber layer a , fiber layer, and a outer rubber layer part or all of which particularly made of rubber containing, fluorescence material, UV light discoloration agent and/or thermal-sensing agent to, release luminescence at night and to change the color or design of the ball together, with the changes of sunlight and temperature anti-fungus agent and/or flavors , being added to said structure to prevent germ contamination and to emit pleasant odor, without changing the physical characters of the ball such as volume weight, and, elasticity, as such the …
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 July 29, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 29, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 29, 2020.
- 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.