Structure of safe bottle cap
CA 2136774 A1 · Owner: Hsu, Chin-Ho · Inventors: Hsu, Chin-Ho
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved structure of a safe bottle cap mainly, provides the safe bottle cap with an automatic closing funcion, the combination of such structure can render the cap to be in a closed state at any time just pr-, ess the rear end of the cap, the contents in the bottle can be poured out, and after use, just release the finger on the cap, the cap can be automatically closed so that the contents in the bottle will not be poured out when the bottle is pushed over inadvertently or the bottle drops accidently when in use.
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 November 28, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 28, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 28, 2016.
- 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.