Patent Yard Sign in
Expired Canadian patentCanada

Geotextile having soil treatment compound and method

CA 1322667 C · Owner: Zimmerman, Leon H. · Inventors: Zimmerman, Leon H.

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

Abstract of the Disclosure, A geotextile having a soil treatment compound includes a porous sheet having a plurality of spaced nodules of composite material secured to the sheet. The nodules are composed of a soil treating agent and a binder which is injected through the sheet and solidified, such that the sheet 19 enmeshed by the nodules.

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 October 5, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 5, 2010.
  • 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 22, 1988
GrantedOctober 5, 1993
Term endedOctober 5, 2010
Patent numberCA 1322667 C
Classification (IPC)A01N25/34 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedAug 22, 1988Patent grantedOct 5, 1993Term endedOct 5, 2010

Sources & verification

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