Power backup system for volatile memory
CA 2200982 C · Owner: Cole, Larry Joe · Inventors: Cole, Larry Joe; Harper, James Donald, Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a preservation system (170) for a volatile memory (171a-174a) associated with a nonvolatile memory (171b-174b) an energy storage portion, accumulates energy while power is provided normally. When a power outage occurs, the stored energy is supplied to the volatile memory. Enough backup power is stored to accommodate the vast majority of unintentional interruption of, power. Eventually, after removal of external power when the backup power, decreases to a predetermined amount data in the volatile memory is , transferred to the nonvolatile memory. The preferred use of the preservation system is an environment with vibration and/or power switching transients that affects the supply, of …
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 September 15, 1995 and granted March 12, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 15, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 15, 2017.
- 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.