Glass cleaner compositions having linear alkyl sulfate surfactants
CA 2220131 C · Owner: Policicchio, Nicola John · Inventors: Policicchio, Nicola John; Mitchell, Lori Boden; Masters, Ronald Anthony
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 an aqueous liquid hard surface detergent , composition having excellent surface lubricity and filming/streaking characteristics. Said composition comprises less than about 1 % by weight of , the composition, of a C8-C18 linear alkyl sulfate detergent surfactant wherein more than about 30 %, by weight of said surfactant has a C14 chainlength, is , essentially free of unreacted fatty alcohol and alkanolamine compounds and is suitable for cleaning glass.
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 April 23, 1996 and granted March 27, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 23, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 23, 2018.
- 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.