Antitheft system and antitheft apparatus
CA 2127804 C · Owner: Maeda, Shuji · Inventors: Maeda, Shuji; Sugimoto, Toshinori; Nakamura, Toshinori
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An antitheft apparatus for hindering theft by an intruder when the intruder is detected in an alarm mode without operator. In a smoke generation system which is coupled with an alarm system including an intruder detector for detecting an intrusion of an intruder into a monitored area and a mode setter for setting or resetting an alarm state in the monitored area, and which includes a smoke generator for generating smoke inside the monitored area an antitheft system including smoke generation operation control means for operating the smoke generator in response to the detection signal of the intruder detector when the mode setter sets a mode of the monitored area to an alarm mode without …
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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 June 14, 1993 and granted September 28, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 14, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 14, 2015.
- 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.