Method of operating a storage tube
CA 1046162 A · Owner: Matsushita Electric Industrial Company · Inventors: Nishino, Tsutomu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract From the Canadian patent
An erasing process is accomplished by scanning a target with an unmodulated electron beam under the condition of secondary electron emission ratio of the target (.delta.) above a unit value. Then a writing process is carried out by scanning the target with a modulated electron beam under the condition .delta. < 1 and finally a reading process is achieved by scanning the target with an unmodulated electron beam also under the condition .delta. < 1. - 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.
Why it's free to use
- Granted January 9, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 9, 1996.
- 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.