Process and device for detecting foreign bodies in a liquid
CA 1194581 A · Owner: Societe Nationale Industrielle Aerospatiale · Inventors: Labrador, Jacques A.L.; Ometz, Pierre H.M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process and device for detecting foreign bodies in a liquid The invention relates to a process and device for detecting foreign bodies in a liquid, wherein the image of the apparent surface of the liquid in rotation in the immobilized recipients is formed, by reflection diffrac-, tion, refraction or attenuation of the light coming from a source, on a matrix of reception and read cells.In the matrix each cell is perfectly delimited and its position is identified by numerisation. A serie of images is produced of which a certain number are taken as reference and memorized. Each image following the last memorized image is compared therewith cell by cell by a subtractor 15. The results of such a …
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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 October 1, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 1, 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
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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.