Automatic tip approach method and apparatus for scanning probe microscope
CA 2098040 C · Owner: International Business Machines Corporation · Inventors: Martin, Yves; Roessler, Kenneth Gilbert; Klos, Martin Allen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A non-contact, step-wise method for automatically positioning a sensing probe, having a vibrating cantilever and tip, above a target surface utilizing acoustic and Van der Waals interactions respectively during an approach method. The sensing probe is lowered to a substantially optimized tip to target surface distance. The system utilizes the interaction of forces between the vibrating cantilever and target surface to automatically position the sensing probe above the target surface.
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 June 9, 1993 and granted February 15, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 9, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 9, 2015.
- 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.