Razor blade unit
CA 2242199 C · Owner: The Gillette Company · Inventors: Gilder, Bernard; Garraway, Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a safety razor blade unit a skin engaging member has a surface for contacting the skin during shaving defined by spaced hollow projections (3) which extend upwardly from a base (2) and are open at their upper ends. The projections are made of a resiliently flexible material and are preferably arranged in rows along the base. The projections are preferably tubular but can taper in either direction, internally and/or externally.
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 January 8, 1997 and granted March 26, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 8, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 8, 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.