Deicing solution
CA 2360004 C · Owner: Sears Petroleum & Transport Corp. · Inventors: Hartley, Robert A.; Wood, David H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A de-icing and anti-icing composition in the form of an aqueous solution which includes a low molecular weight carbohydrate a inorganic freezing point depressant in the form of a chloride salt and a thickener. The molecular weight of the carbohydrate is from about 180 to 500 with a preferred range of about 180 to 1000.
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 26, 2001 and granted January 29, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 26, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 26, 2023.
- 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.