Patent Yard Sign in
Expired Canadian patentCanada

Wood-like molded product of synthetic resin

CA 1238170 A · Owner: Nishibori, Sadao · Inventors: Nishibori, Sadao

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

Title of the Invention Wood-like Molded Product of Synthetic Resin Abstract of the Disclosure, The present invention relates to wood-like molded products of synthetic resin which are manufactured by mixing a synthetic resin material with a fine aggregate of cellulose base such as wood meal, chaffs, begasse and in which the internal residual stress which may cause deformation (for example, warping and twisting) of the products at the time or after molding is eliminated in advance to prevent chronological deformation. More particularly it relates to a, method of eliminating said residual stress by subjecting the molded products containing cellulose-base aggregate especially the resinous skin …

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 June 21, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 21, 2005.
  • 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 19, 1984
GrantedJune 21, 1988
Term endedJune 21, 2005
Patent numberCA 1238170 A
Classification (IPC)B29C59/00

Timeline

Timeline From CIPO dates

1985198819911994199720002003Application filedDec 19, 1984Patent grantedJune 21, 1988Term endedJune 21, 2005

Sources & verification

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