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Expired Canadian patentCanada

Method and apparatus to secure distributed digital directory object changes

CA 2182791 C · Owner: Novell, Inc. · Inventors: Olds, Dale R.; Higley, Deeanne; Kingdon, Kevin W.

CIPO record

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

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Abstract From the Canadian patent

A method and apparatus for providing access control to objects in a distributed network directory employing static resolution to resolve object attributes. A first object has a Security Equals attribute and a second object has an Equivalent To Me attributes. Upon receiving a request for the first object to access the second object authorization of such access is verified by checking if the two attributes are synchronized. The attributes are synchronized when the Security Equals attribute of the first object includes the second object and the, Equivalent To Me attribute of the second object includes the first object. A method of synchronizing the two attributes is also disclosed.

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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 December 15, 1995 and granted June 6, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 15, 2015.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 15, 2017.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 15, 1995
GrantedJune 6, 2000
Term endedDecember 15, 2015
Patent numberCA 2182791 C
Classification (IPC)H04L12/22 +2 more

Timeline

Timeline From CIPO dates

1996199820002002200420062008201020122014Application filedDec 15, 1995Patent grantedJune 6, 2000Term endedDec 15, 2015

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