Optical sensor apparatus
CA 1098607 A · Owner: Eastman Kodak Company · Inventors: Ahrenkiel, Richard K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A light sensing apparatus is described which employs a GaAsP MOS light-receiving element to which a potential is applied for creating a depletion region. Upon exposure minority carriers are generated and trapped. Light levels are sensed by a charge injection technique which results in a characteristic charge or voltage the, magnitude of which is proportional to the total exposure during the sensing period. -1-
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
- Granted March 31, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 31, 1998.
- 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.