Bearing steel having superior rolling contact fatigue life
CA 2317658 A1 · Owner: Hoshino, Toshiyuki · Inventors: Yasumoto, Satoshi; Gotoh, Masao; Hoshino, Toshiyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A bearing steel excellent in rolling fatigue life which can provide a bearing member used for a rolling bearing (roller bearing and ball bearing) element member and particularly excellent in rolling fatigue life characterized by , containing 0.95 to 1.10 mass% of C over 1.60 to 3.50 mass% of Cr, up to , 0.0015 mass% of O up to 0.0010 mass% of Sb and the remaining components of Fe and unavoidable impurities, one or at least two components selected from a group consisting of up to 2.5 mass% of Si up to 2.5 mass% of Mn, up to 2.5 , mass% of Mo up to 3.0 mass% of Ni, up to 1.5 mass% of Nb up to 1.5 mass% of , V, up to 2.0 mass% of Cu and up to 0.08 mass% of Al being permitted to be …
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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 October 28, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 28, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 28, 2021.
- 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
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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.