Patent Yard Sign in
Expired Canadian patentCanada

Protective electromagnetically transparent window

CA 1310573 C · Owner: Sassa, Robert L. · Inventors: Sassa, Robert L.

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

A weather-, moisture and gas-resistant radome and laminate for radomes comprising layers of porous expanded polytetrafluoroethylene (EPTFE) membrane, fluorinated thermoplastic membrane and woven EPTFE textile, backing fabric. Superior electromagnetically transmission characteristics excellent physical and electrical properties.

Read the whole patent

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 November 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 24, 2009.
  • 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 5, 1988
GrantedNovember 24, 1992
Term endedNovember 24, 2009
Patent numberCA 1310573 C
Classification (IPC)B32B27/06 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedAug 5, 1988Patent grantedNov 24, 1992Term endedNov 24, 2009

Sources & verification

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