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Expired Canadian patentCanada

Chemically resistant composite structures and garments produced therefrom

CA 1291016 C · Owner: Adiletta, Joseph G. · Inventors: Adiletta, Joseph G.

CIPO record

Overview

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

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Abstract From the Canadian patent

A flexible, impermeable, universally chemically resistant composite structure which may be fabricated into protective clothing useful, for example in the, handling and clean up of hazardous chemicals is provided for, which composite structure comprises a fabric substrate , and thermally melt-bonded on both sides thereof, a coated film , which coated film comprises a PTFE film having a thermoplastic fluoropolymer coating on both sides thereof. Preferably the, fabric substrate of the composite structure has been treated with an antiwicking agent. A method for forming such composite structures is provided for, which method comprises, thermally-melt-bonding a PTFE film having a thermoplastic …

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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 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 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.
FiledDecember 8, 1988
GrantedOctober 22, 1991
Term endedOctober 22, 2008
Patent numberCA 1291016 C
Classification (IPC)B32B27/12 +2 more

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedDec 8, 1988Patent grantedOct 22, 1991Term endedOct 22, 2008

Sources & verification

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