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Expired Canadian patentCanada

All-carbon composite structure

CA 1086156 A · Owner: Bendix Corporation · Inventors: Spain, Raymond G.

CIPO record

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

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Abstract From the Canadian patent

An improved substantially all-carbon planar structure is provided which comprises essentially continuous carbon fibers in a carbonaceous matrix. The fibers in the region adjacent to the periphery of the structure are ordered in a direction which substantially follows the contour of the periphery thereby providing increased strength against stresses in the region adjacent to the periphery. The fibers in the remainder of the structure may or may not be ordered. The surface of the region adjacent to the periphery has a coating of material which is substantially inert in the presence of oxygen has a, melting point greater than about 1400°F and is substantially, impermeable to the passage of …

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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 September 23, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 23, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 16, 1977
GrantedSeptember 23, 1980
Term endedSeptember 23, 1997
Patent numberCA 1086156 A
Classification (IPC)F16D65/12

Timeline

Timeline From CIPO dates

1978198019821984198619881990199219941996Application filedMay 16, 1977Patent grantedSep 23, 1980Term endedSep 23, 1997

Sources & verification

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