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Expired Canadian patentCanada

Standing seam metal floating roof assembly

CA 1215515 A · Owner: Nucor Corporation · Inventors: Simpson, Harold G.; Hollman, Bert D.

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

A pitched floating standing seam metal roof formed of elongated metal panels. Each panel is provided with an upstanding female side portion and an upstanding male side portion. Adjacent panels are sidelapped and endlapped. The lapped portions are sealed with a resilient mastic sealant. Means are provided for applying constant pressure to the sealant. The roof is attached to the infrastructure by two-part clips. The lower part of each clip is fixed; the upper part of each clip is provided with means for preventing relative motion of the clip in respect of the roof panels. Each of the panels of the four-corner junction of the lapped standing seam portions is notched. The junction is sealed by …

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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 December 23, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 23, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 3, 1983
GrantedDecember 23, 1986
Term endedDecember 23, 2003
Patent numberCA 1215515 A
Classification (IPC)E04B7/00 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedAug 3, 1983Patent grantedDec 23, 1986Term endedDec 23, 2003

Sources & verification

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