Pepper mill
CA 2279079 A1 · Owner: Cheng, Shun-I · Inventors: Cheng, Shun-I
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pepper mill includes a bottle with a top cap and an open bottom end into which a grinding member, an engaging member and a protection ring are securely received. A stick extends through the grinding member the engaging member, the, protection ring and securely connected to the top cap. The grinding member has spiral teeth defined in the outside thereof and the engaging ring has spiral teeth, defined in the inside thereof, wherein the grinding member is enclosed by the engaging ring. The protection ring encloses the engaging ring and the grinding member, both of which are made of ceramic. A positioning member is connected to, -the protection ring and a base member is secured in the open …
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 28, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 28, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 28, 2021.
- 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.