Transparent personal cleansing bar
CA 2196536 C · Owner: Zyngier, Alexandre · Inventors: Brunsman, Michael August; Wiegand, Benjamin Carl; Zyngier, Alexandre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to transparent pour molded personal cleansing bars which exhibit desirable hardness characteristics. These transparent bars are mild, low smearing and exhibit good lathering characteristics. The transparent bars of the present invention comprise: from 18 parts to 35 parts soap wherein said soap comprises at least 50 % insoluble sodium soap; from 14 parts to 32 parts water; from 5 parts to 37 parts lathering synthetic surfactant; wherein said lathering synthetic surfactant has a critical micelle concentration equilibrium surface tension between 10 and 50 dynes/cm as , measured at 25 ~C; and from 18 parts to 37 parts of a water soluble organic solvent.
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 26, 1995 and granted June 12, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 26, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 26, 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.