Apparatus for detecting a surface flaw of a material at high temperature
CA 1093679 A · Owner: Nippon Steel Corporation · Inventors: Ichijima, Isamu; Miyagawa, Kazuo; Watanabe, Seiichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
o the Disclosure:, An apparatus for detecting a surface flaw of a hot metal including a particularly designed television camera shutter means, and control circuit which compensates television camera's shading as well as temperature difference among normal parts of observed material. The apparatus makes it possible to conduct clear detecting of the flaw on the surface of the hot material as it is so that the yield loss at the time of scarfing can be avoided while the heat energy can effectively be utilized.
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 January 13, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 13, 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.