Patent Yard Sign in
Expired Canadian patentCanada

Polymer impregnated wood and process for preparing the same

CA 1137365 A · Owner: Wacker-Chemie Gmbh · Inventors: Wilhelm, Herman; Sallersbeck, Konrad; Brunner, Erich

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

Novel polymer impregnated wood is provided herein. The polymer impregnated wood is prepared by impregnating the wood with a mixture containing an organic compound selected from the group consisting of monomers prepolymers and mixtures thereof having aliphatic multiple bonds which, is capable of free radical polymerization and a crosslinkable organopolysiloxane having from 0.5 to 2 Si-bonded organic radicals and halogenated monvalent hydrocarbon radicals and Si-bonded functional groups selected from the class consisting of Si-bonded hydrogen atoms Si-bonded hydroxyl, groups and SiOC-bonded alkyl groups and thereafter polymerizing and crosslinking the impregnated mixture in the wood. Such …

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 December 14, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 14, 1999.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 29, 1980
GrantedDecember 14, 1982
Term endedDecember 14, 1999
Patent numberCA 1137365 A
Classification (IPC)B27K3/15 +1 more

Timeline

Timeline From CIPO dates

1981198319851987198919911993199519971999Application filedJan 29, 1980Patent grantedDec 14, 1982Term endedDec 14, 1999

Sources & verification

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