Focusing mechanism for hand-held ccd scanners
CA 2227166 C · Owner: Shreesha, Vasanth · Inventors: Shreesha, Vasanth
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hand-held scanning device (30) employs means for varying the depth of field of the scanning device (30). The scanning device (30) comprises a gun-shaped housing (36) for comfortably fitting within the hand of an operator. The scanning device (30) is actuated by a finger-activated trigger (40) which , moves a CCD sensor (60) on an image plane as the trigger (40) is pulled. In this manner, focusing for large depth of field applications is achieved.
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 May 5, 1997 and granted December 26, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 5, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 5, 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.