Numeric keypad simulated on touchscreen
CA 2263975 C · Owner: Eberhardt, Christopher Michael · Inventors: Painter, John A.; Eberhardt, Christopher Michael; Cochran, Bruce Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention is a system for controlling a plurality of ophthalmic microsurgical instruments connected thereto. The microsurgical instruments are for use by a user such as a surgeon in performing ophthalmic surgical procedures. The system includes a data communications bus and a user interface (3) connected to the data communications bus. The user interface (3) provides information to the user and receives information from the user which is representative of operating parameters of the microsurgical instruments. The system also includes surgical modules (13) connected to and controlling the microsurgical instruments as a function of at least one of the operating parameters. The surgical …
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 28, 1997 and granted April 2, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 28, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 28, 2019.
- 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.