Non-algorithmic vectored steganography
CA 2557516 C · Owner: Grace, David · Inventors: Grace, David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
According to the invention, a system for verifying a steganogram is disclosed. Included in the system are a first system a second system, a steganogram, and , a steganogram preparer. The first system is coupled to an access device by way of a public network. The second system coupled to the first system. The steganogram is comprised of random data and encrypted information which is , randomly dispersed throughout the steganogram. The steganogram preparer provides the steganogram to the access device. The first system gathers a subset of the encrypted information from the access device. The second system receives the subset or a derivative of the subset and verifies that the subset or …
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 February 28, 2005 and granted November 15, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 28, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.