Shaving system with improved guard structure
CA 2246557 C · Owner: Tseng, Mingchih Michael · Inventors: Tseng, Mingchih Michael; Yin, Yuling; Sweeney, Philip John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A shaving system that includes a housing (10) one or more blades (2, 3) , mounted on the housing a cap (6) behind the blades on the housing and a , guard structure (4) in front of the blades on the housing the guard structure , including flexible skin-engaging protrusions (26) that engage a user's skin in front of the blades and a water leachable shaving aid composite (24) positioned to deliver a shaving aid to the skin behind the flexible skinengaging protrusions (26).
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 March 24, 1997 and granted May 20, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 24, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 24, 2019.
- 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.