Lubrication of magnetic recording media
CA 1191678 A · Owner: Memorex Corporation · Inventors: Iqbal, Sikandar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An aqueous coating composition is disclosed forming a magnetic coating layer. The composition is improved over prior art magnetic coatings by the inclusion of a colloidal emulsion of a lubricant such, as, for example, a member selected from the group consisting of aliphatic and aromatic stearates silicone, oils, perfluoro alkyl polyethers and fluorinated fluids.
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
- Granted August 13, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 13, 2002.
- 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.