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Expired Canadian patentCanada

Chemiluminescent device

CA 1290733 C · Owner: American Cyanamid Company · Inventors: Elliott, Laura

CIPO record

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Abstract From the Canadian patent

30,677, TITLE OF THE INVENTION, CHEMILUMINESCENT DEVICE ABSTRACT OF THE DISCLOSURE, A chemiluminescent device is disclosed wherein a first polymeric sheet having a shaped cavity therein is sealed around its periphery to a second polymeric sheet and the cavity contains 1) an absorbent article produced from a polyolefin, or a polyester or glass fibers and being of substantially the same shape as the cavity and 2) a sealed receptacle containing a first liquid component of a chemiluminescent light composition and wherein there is also present, outside said sealed receptacle, a second liquid component of a chemiluminescent light composition, said absorbent article conforming to seven critical …

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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

  • Granted October 15, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 15, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 10, 1988
GrantedOctober 15, 1991
Term endedOctober 15, 2008
Patent numberCA 1290733 C
Classification (IPC)F21K2/06

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedNov 10, 1988Patent grantedOct 15, 1991Term endedOct 15, 2008

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