Lubricated metal articles and assembly containing same
CA 2055321 C · Owner: Becton, Dickinson And Company · Inventors: Williamitis, Victor A.; Spielvogel, David E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A metal article has a coating of a noncuring polar lubricant. Preferred articles are of stainless steel and may be cutting devices such as needles lancets and cannulas or sliding devices such as stylets and guidewires. Preferred noncuring polar lubricants are polysiloxanes terminated with a polar group. Particularly preferred lubricants are aminoalkyl or carboxyalkyl polysiloxanes. The lubricated metal article may be in a sliding relationship with a plastic article such as a catheter-guidewire or a catheter-cannula assembly. The plastic portion of the assembly may also include a lubricant.
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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 November 13, 1991 and granted January 5, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 13, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 13, 2013.
- 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.