Stair safety cushion
CA 2344949 A1 · Owner: Yang, Chin-Tsuen · Inventors: Yang, Chin-Tsuen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A stair safety cushion, whereof the top plane has softness and the bottom plane has anti-, shock ability, is make to bond the bottom plane having anti-shock ability to stairs by an, industrial twin adhesive with strong stickiness and is paved beyond the stair edge to, combined with stairs securely and not easy to separate such that harm resulted from, that children, the aged, and persons who act inconveniently fall over stairs is reduced.
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 24, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 24, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 24, 2023.
- 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.