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Expired Canadian patentCanada

Slider with anti-stiction boss

CA 1265867 C · Owner: Ananth, Raju S. · Inventors: Verdone, Michael A.; Ananth, Raju S.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

Salient embodiments comprise a magnetic recording slider whose record-confronting face is characterized by two or three rails wherein stiction forces are countar-acted by provision of boss means on one or several rails, or therebetween, and the techniques for fabricating such.

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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 13, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 13, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 12, 1985
GrantedFebruary 13, 1990
Term endedFebruary 13, 2007
Patent numberCA 1265867 C
Classification (IPC)G11B5/60 +1 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedNov 12, 1985Patent grantedFeb 13, 1990Term endedFeb 13, 2007

Sources & verification

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