Selective modification of individual nanometer and subnanometer structures in the surface of a solid
CA 2070210 A1 · Owner: Fuchs, Harald · Inventors: Schimmel, Thomas; Fuchs, Harald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
O.Z. 0050/42487, Abstract of the Disclosure: A process for the selective modification and reversible removal of extremely fine structures having dimensions of down to the nanometer and subnanometer range from the surface of a solid comprises, moving the fine tip of a probe for example a surface-, sensitive scanning probe which is located at a distance, in the .ANG.ngstrom range above the surface or is in contact with the surface, over the structure at essentially the same height and thus causing a change in this structure.
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 2, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 2, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 2, 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.