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Expired Canadian patentCanada

Cross-linked resins and production thereof

CA 1301402 C · Owner: Sano, Yasuo · Inventors: Sano, Yasuo

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

24205-755, Abstract of the Disclosure, Disclosed is a cross-linked resin obtained by reacting a bis(2-oxazoline) compound with an aromatic compound having at least two amino groups. The cross-linked resin has low waterabsorption, excellent strength, and, in addition tough and, superior heat-resistance. A resin composition comprising the cross-linked resin and reinforcements and/or fillers can be especially advantageously used for preparing a variety of molded articles used in a broad application field for example, space, aircraft, railway vehicles automobiles, civil engineering, electrical and electronic appliances cross-resistant equipment, sports and leisure equipment medical equipment …

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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 May 19, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 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.
FiledNovember 3, 1987
GrantedMay 19, 1992
Term endedMay 19, 2009
Patent numberCA 1301402 C
Classification (IPC)C08G69/00 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedNov 3, 1987Patent grantedMay 19, 1992Term endedMay 19, 2009

Sources & verification

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