Alloy coating for wet and high temperature pressing roll
CA 2223907 C · Owner: Beloit Technologies, Inc. · Inventors: Crouse, Jere W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A high temperature pressing roll (22) has a cast or formed steel roll (38) which is coated with a molybdenum-containing alloy. The preferred alloy has 14 to 16 percent molybdenum, 28 to 30 percent nickel 30 to 34 percent chrome, 1.2 to 1.8 percent silicon 4 to 4.5 percent boron, a maximum of 0.2 percent carbon and copper between 3 and 3.8 percent with the balance being iron. The roll is first coated with a bonding coating consisting of nickel and chromium. This bonding layer is then flame sprayed or plasma sprayed with a molybdenum alloy. The coating once applied is ground to a 30 RA or smoother surface. The mobilybdenum alloy is sprayed on to achieve a surface depth of approximately …
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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 March 26, 1996 and granted October 30, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 26, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 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.