Low voc hair sprays with improved spray characteristics
CA 2128313 C · Owner: Martino, Gary T. · Inventors: Martino, Gary T.; Morawsky, Natalie A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Hair spray compositions in aqueous based systems containing 80% or less of volatile organic compounds exhibit a loss of spray performance properties resulting from viscosity and surface tension increases. The addition of 0.6 to 5% of one or more hydrophobic additives selected from the group consisting of hexamethyl disiloxane, bisphenyl hexamethicone and isocetyl alcohol improves the spray characteristics by eliminating foaming at the spray actuator and on the hair.
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 18, 1994 and granted December 22, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 18, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 18, 2016.
- 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.