Postal rating system with verifiable integrity
CA 2133672 C · Owner: Connell, Richard A. · Inventors: Connell, Richard A.; Sansone, Ronald P.; Pintsov, Leon A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A data center provides a rate table to a user. The rate table is communicated to the mailer along with a hash code. The hash code is based on information from the rating table. The hash code provides a unique number based on the rating table provided. The algorithm within a secure device and to which the rate table is loaded regenerates the hash code based on the information received from the rate table and compares the transmitted hash code with the generated hash code. A comparison is made of the received hash code and the generated hash code to verify that the rate table data has not been intentionally or unintentionally corrupted. The transmitted hash code may be encrypted by the data …
Read the whole patent
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 October 5, 1994 and granted September 1, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 5, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 5, 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.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.