Data security in multipoint publish/subscribe communications
CA 2299505 A1 · Owner: Tibco Software, Inc. · Inventors: Selph, Russell E.; Page, Dennis R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The method and program product are useful in a publish/subscribe communications system (30), such as one having a publisher (10) and at least one subscriber (20). In the method and program product the encrypted data is published to one or more subscribers (20' 20''). The subscriber attempts , decryption but fails to decrypt the data. The method and the program product then initiate a key exchange between the subscriber (20' 20'') and the , publisher (10). This results in passing the key and thereafter decrypting the published 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 August 4, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 4, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 4, 2020.
- 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.