Shaving system
CA 2185682 C · Owner: Tseng, Mingchih Michael · Inventors: Tseng, Mingchih Michael; Lim, Lee K.; Yin, Yuling
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to a shaving system of the wet shave type comprising a blade member (20 24) (one, or more) and a structure (30) which supports or holds the blade member and which has an external skin engaging portion (34) in proximity to the blade member. The skin engaging portion (34) includes an improved shaving aid composite (42) which comprises a matrix of a water-insoluble polymer, an effective amount of a skin lubricating water-soluble polymer dispersed within the matrix and a compatibilizer material that improves the compatibility of the water-soluble polymer with the water-insoluble polymer so as to reduce the domain size of the water-soluble polymer within 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 March 16, 1995 and granted August 10, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 16, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 16, 2017.
- 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.