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Expired Canadian patentCanada

Graphical display of relationships

CA 2131508 C · Owner: Wills, Graham John · Inventors: Wills, Graham John; Eick, Stephen Gregory

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

Apparatus for providing displays in which the locations of nodes of a graph relative to each other are a function of the significance of a relationship between the nodes. The technique used to locate the nodes produces groups of nodes with significantrelationships to each other which are set visually apart from the other nodes. The relationships between the nodes are defined by using a statistic to give weights to links between the nodes. Statistics may also he used to determine the size shape, and color of the nodes and the color and width of the links. The display may also include histograms which show the numbers of links or nodes which have given values of the statistics and which …

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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 September 6, 1994 and granted September 29, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 6, 2014.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 6, 2016.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 6, 1994
GrantedSeptember 29, 1998
Term endedSeptember 6, 2014
Patent numberCA 2131508 C
Classification (IPC)G06F11/30 +2 more

Timeline

Timeline From CIPO dates

1995199719992001200320052007200920112013Application filedSep 6, 1994Patent grantedSep 29, 1998Term endedSep 6, 2014

Sources & verification

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