Crt with electromagnetic radiation reducing means
CA 2038281 C · Owner: Hoshikawa, Akira · Inventors: Yamashita, Kenkichi; Onuma, Kunihiko; Kizuya, Isao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a CRT display unit having a reduced electromagnetic radiation. The unit is comprised of encasing a video amplifier for amplifying image signals sent from a computer and a CRT tube within a chassis. The CRT is sealed at a joining section between a funnel section and panel section. Conductive coating films are provided on the external and internal surfaces of the funnel section. A metal rim band covers the circumference of the panel section. Metal fixtures fasten the tube to the chassis and are installed on the rim band. The conductive coating film on the external surface and the rim band are electrically connected by means of a first conductive member. The …
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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
- Filed March 14, 1991 and granted March 5, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 14, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 14, 2013.
- 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.