Sulfurized molybdenum carbamate and phosphorothionate-containing urea grease composition
CA 2124283 C · Owner: Mochizuki, Hirofumi · Inventors: Ozaki, Takahiro; Okano, Nobuhiko; Miyajima, Kazuhiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A urea grease composition is disclosed which, comprises a urea grease and, incorporated therein as additives, a sulfurized molybdenum dialkyldithiocarbamate represented by formula (A):, (wherein R1 and R2 each independently represent an alkyl group having from 1 to 24 carbon atoms m+n=4, m is 0 to 3, and n is 4 to 1) and triphenyl phosphorothionate represented by formula (B):,
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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 May 25, 1994 and granted April 27, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 25, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 25, 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.