Improvements in or relating to an atm switch
CA 2235137 A1 · Owner: Dumas, Pierre · Inventors: Coppola, Marcello; Simpson, Robert; Thompson, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An ATM routing switch (21) has a buffer circuit (35) for holding cells located on queues at output ports (30), the buffer having a first reserve buffer capacity (161, 162) for cells of a first type requiring integrity of cell transmission and a first designation for use in determining a permitted path through the network, a second reserve buffer capacity (163 164) for cells of , the first type having a second designation for use in determining a different permitted path in the network and a third reserve buffer capacity (150) for cells of a second type accepting some loss of cells in transmission flow , control circuitry operating to limit input of cells of either the first or second …
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 29, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 29, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 29, 2019.
- 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.