Patent Yard Sign in
Expired Canadian patentCanada

Wood preservative compound

CA 86211 A · Owner: Zimmer, Carl Ludwig Valentin · Inventors: Zimmer, Carl Ludwig Valentin

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

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.

Google PatentsCIPO record

Why it's free to use

  • Granted March 29, 1904. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 29, 1921.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 29, 1901
GrantedMarch 29, 1904
Term endedMarch 29, 1921
Patent numberCA 86211 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

1902190419061908191019121914191619181920Application filedApril 29, 1901Patent grantedMarch 29, 1904Term endedMarch 29, 1921

Sources & verification

Official CIPO records

Canadian Patents DatabaseClaims, description, documents and status.CIPO

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.com

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