Method for measuring rotational speed of molecule of fullerenes
CA 2492408 A1 · Owner: Sun, Yong · Inventors: Miyasato, Tatsuro; Sun, Yong
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for measuring the rotational speed (number of revolutions or rotational period) of fullerene or a derivative thereof through a relatively convenient and inexpensive means in order to evaluate fullerenes. A thin film of fullerene or a derivative thereof is made to absorb a radio wave and variation in the field strength of a radio wave is measured for temperature variation. When the field strength varied abruptly from an absorption zone to a nonabsorption zone at some temperature the rotational speed of fullerene or , a derivative thereof at that temperature is determined from the frequency of radio wave at that moment. A radio wave leaked from the surface of a surface …
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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 July 11, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 11, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 11, 2025.
- 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.