De-oiling process using enzymes
CA 2256300 A1 · Owner: Latta, Charles J. · Inventors: Latta, Charles J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compositions and methods are provided for cleaning and de-oiling metal parts and then degrading the removed oils or other organic compounds in an environmentally-friendly manner. The compositions generally contain surfactants to remove the oils and enzymes to degrade the oils. Generally both aliphatic and, aromatic compounds normally present in standard oils lubricants, cutting oils, and, greases are removed from the metal parts (i.e. "solubilized") by surfactants (although the enzymes may also assist in this process) and then ultimately broken down into relatively short-chain fatty acids by enzymes both processes being, carried out in an aqueous medium. The surfactants include (a) one or …
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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 December 17, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 17, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 17, 2020.
- 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.