Image scanning device
CA 2121610 C · Owner: Sharp Kabushiki Kaisha · Inventors: Nagano, Fumikazu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An image scanning device includes a light source for emitting a beam a CCD circuit board having a CCD sensor an optical unit for guiding the emitted beam from the light source to the CCD sensor a CCD sensor driving circuit connected to the CCD circuit board by a signal cable a clock generating circuit for generating a clock signal to be transferred to the CCD sensor a reset pulse generating circuit for generating a reset pulse for resetting an output buffer of the CCD sensor a clamp circuit for clamping an output of the CCD sensor and an analog-to-digital converter for converting an analog signal into a digital signal. The clock generating circuit is disposed on the CCD circuit board. The …
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 April 19, 1994 and granted September 21, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 19, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 2016.
- 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.