Method and apparatus of repeatedly recording optical image information and image pickup device
CA 1332465 C · Owner: Nakagaki, Shintaro · Inventors: Furuya, Masato; Asakura, Tsutou; Shinonaga, Hirohiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A image pickup device having a rewritable recording member on which optical patterns are repeatedly recorded as electrostatic images using a writing head with an electric potential applied between the head and recording member. Each image recorded on the recording member is erased prior to recording a subsequent image by application of an alternating voltage or an electric potential of opposite polarity between the writing head and recording member.
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 October 11, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 11, 2011.
- 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.