Scanning microscope comprising force-sensing means
CA 2075855 C · Owner: American Telephone And Telegraph Company · Inventors: Betzig, Robert Eric
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A scanning, imaging system is described. A probe 10 having a fine tip 70 is disposed adjacent the surface of a sample 30 and scanned in a pattern lying in a, plane substantially parallel to the surface. Means 40 50 are provided for , oscillating, the probe tip substantially within the scanning plane. Shear forces acting , upon the, probe tip in a substantially lateral direction cause changes in the , oscillation of the probe tip. Such changes are detected by a position-sensitive photodetector 80.
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 August 12, 1992 and granted January 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 12, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 12, 2014.
- 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.