Controlled process for the heat treating of delubed material
CA 2173531 C · Owner: Nayar, Harbhajan S. · Inventors: White, George R. Iii; Nayar, Harbhajan S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process and apparatus for the heat treating of a part suspected of containing a lubricant in which the part is preheated to a temperature at which the lubricant vaporizes, the vaporized lubricant is converted to at least one gaseous by-product, the concentration of at least one of the by-products is thenmeasured and heat treating of the part is conducted when the concentration of the measured by-product or total C-H bonds thereof reaches a predetermined value.
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 April 4, 1996 and granted July 27, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 4, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 4, 2018.
- 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.