Light sensitive screen
CA 1191638 A · Owner: Hitachi, Ltd. · Inventors: Maruyama, Eiichi; Tanaka, Yasuo; Shimomoto, Yasuharu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, Disclosed is a light sensitive screen including a transparent conductive film and a photoconductive layer. The transparent film is arranged on the side of incident light. The invention is characterized in that the photoconductive layer is constructed of one or more layers of one or more photoconductive substances at least one of, which comprises amorphous silicon containing at least 5 atomic-% to 30 atomic-% of hydrogen, whose optical forbidden band gap is 1.65 eV to 2.25 eV and whose peak component in an infrared absorption spectrum at a wave number of 2,100 cm-1 is greater than that at a wave number of 2,000 cm-1. Various characteristics of an imaging device …
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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 August 6, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 6, 2002.
- 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.