Safety razor
CA 2081576 C · Owner: Shurtleff, Jill Marie · Inventors: Shurtleff, Jill Marie; Leonard, Elizabeth Castle
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A safety razor has a thin flexible metal foil (20) member with a plurality of apertures (22) and an edge of each aperture is, sharpened to define a shaving edge. The foil member is disposed on support surface structure and thin flexible protective sheet, structure (28) with a skin-engaging surface extends about the perimeter of the metal foil member and is secured in overlying relation to the support surface and to the foil member with the apertures of the foil member exposed in shaving relation immediately adjacent and surrounded by the skin engaging surface of the protective sheet structure.
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 February 21, 1991 and granted January 26, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 21, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 21, 2013.
- 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.