Magnetized material having enhanced magnetic pull strength and a process and apparatus for the multipolar magnetization of the material
CA 2117796 C · Owner: Srail, Raymond C. · Inventors: Szczepanski, Thomas R.; Kunig, Frederic W.; Srail, Raymond C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process and apparatus for permitting the magnetization of flexible hard magnetic materials in the form of sheets or strips, such as magnetic rubber, wherein opposing arrays (10) formed from alternating magnetic disks and flux conducting elements are used in sets of two with opposing polar moments such as to induce a magnetic flux in the gap between the disks. A material to be magnetized is passed between the array sets (35) and consequently imprinted with magnetic poles. The magnetized properties of the material is enhanced by passing the material through a second set (38) of arrays which are axially offset with respect to the first set of arrays. This enhances the residual …
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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 April 12, 1993 and granted August 15, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 12, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 12, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.