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Expired Canadian patentCanada

Disk stripping process

CA 1232136 A · Owner: Magnetic Peripherals Inc. · Inventors: Shadzi, Bahram

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The invention comprises a process for stripping disks coated by a process in which the disks are rotated at high speed during a media application step, then immersed in an orienting magnetic field and, finally dried at low speed. If a flaw is detected after drying according, to the stripping and recoating process of the present invention the disk, is simply stripped and recoated by merely repeating the high speed coating step. During stripping and recoating the nozzle starts at the, outside diameter and moves toward the inside diameter. As the nozzle moves from outside diameter to inside diameter the new media which is, discharged from the nozzle onto the disk strips away the old media …

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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 February 2, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 2, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 19, 1984
GrantedFebruary 2, 1988
Term endedFebruary 2, 2005
Patent numberCA 1232136 A
Classification (IPC)H01F10/00 +1 more

Timeline

Timeline From CIPO dates

1985198819911994199720002003Application filedOct 19, 1984Patent grantedFeb 2, 1988Term endedFeb 2, 2005

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.