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Expired Canadian patentCanada

Environmental test apparatus

CA 2105366 C · Owner: Nippon Yusen Kaisha · Inventors: Ueda, Ichiro; Ishizuka, Masanori

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

An environmental test apparatus comprising a substrate on which a test specimen is mounted securely a cover, disposed on the substrate for housing the test specimen within a tightly closed space thereof, a temperature/moisture adjusting means for adjusting temperature and moisture in the tightly closed space, a memory means for storing control data such as accumulated past data or various kinds of environment reproducing data, a control means for controlling the temperature/moisture adjusting means based on the control data stored in the memory means and a data measuring means for measuring and recording various kind of data for environmental test. Since the test specimen is disposed in the …

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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 September 1, 1993 and granted June 30, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 1, 2013.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 1, 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.
FiledSeptember 1, 1993
GrantedJune 30, 1998
Term endedSeptember 1, 2013
Patent numberCA 2105366 C
Classification (IPC)G05D27/00 +2 more

Timeline

Timeline From CIPO dates

1994199619982000200220042006200820102012Application filedSep 1, 1993Patent grantedJune 30, 1998Term endedSep 1, 2013

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.