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Expired Canadian patentCanada

Computer system and method for determining a travel scheme minimizing travel costs for an organization

CA 2186113 C · Owner: Rosenbluth International, Inc. · Inventors: O'Brien, Danamichele Brennen

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 computer system (10) and a method for determining a travel scheme minimizing travel costs for an organization where the organization expects to purchase travel trips for a plurality of travelers for a plurality of travel links served by at least one carrier. The system comprises a data input device (54) for receiving travel information relating to the carriers and the links, a data storage device (34) for storing the received travel information, a processor (32) and a data output device (38). From the travel information an objective, function representing a travel cost for the travel trips and a set of constraints comprising restrictions relating to the function are constructed. A …

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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 February 3, 1995 and granted January 11, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 3, 2015.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 3, 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.
FiledFebruary 3, 1995
GrantedJanuary 11, 2000
Term endedFebruary 3, 2015
Patent numberCA 2186113 C
Classification (IPC)G06Q50/00 +2 more

Timeline

Timeline From CIPO dates

1996199820002002200420062008201020122014Application filedFeb 3, 1995Patent grantedJan 11, 2000Term endedFeb 3, 2015

Sources & verification

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