Identification number issuing device and identification number verification device
CA 2192515 C · Owner: Nakamura, Takahiko · Inventors: Nishikawa, Keiichi; Yoshida, Hideo; Nakamura, Takahiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An identification sequence issuing device comprising a code converter portion for converting an identification sequence character string that may include letters numerals, and, the like, into a string of character codes having one-to-one correspondence to the characters in the character string, and a check and selection portion for selecting as an identification sequence the character string corresponding to a character code string that is determined to meet a Reed-Solomon code rule with each character code being a symbol of the Reed-Solomon code and the character code string length being the length of the Reed-Solomon code. The identification sequence is issued based on the Reed-Solomon …
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 December 10, 1996 and granted November 21, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 10, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 10, 2018.
- 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.