Lubricant and use thereof
CA 2047199 C · Owner: Boewing, Walter G. · Inventors: Falter, Wolfgang; Schmitz, Karl-Heinz; Boewing, Walter G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A lubricant is disclosed which is based on amines and optionally the usual diluents or auxiliary and additive substances and contains at, least one secondary and/or tertiary amine and/or salts of these amines wherein the proportion of the amines to the total formulation is 1 to 100 % by weight. These lubricants are preferably used as chain lubricants in the food industry, particularly for automatic chain and belt lubricators.
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 February 14, 1990 and granted September 26, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 14, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 14, 2012.
- 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.