Pourable cast melt bar compositions comprising low levels of water and minimum ratios of polyol to water
CA 2267563 C · Owner: Unilever Plc · Inventors: Rattinger, Gail Beth; Fair, Michael Joseph; Massaro, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to cast melt bar compositions comprising surfactant, fatty acid, generally lower MW polyalkylene glycol and small amounts of water wherein the ratio of total polyol to water is at least 3:1. By using less water and greater variants of polyol the bars allow larger amounts of generally insoluble materials to be used and also allow retention of bar integrity using limited amounts of soap (important for mildness).
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 October 1, 1997 and granted May 13, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 1, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 1, 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.