Patent Yard Sign in
Expired Canadian patentCanada

Product of a chlorothioformate

CA 1099280 A · Owner: Stauffer Chemical Company · Inventors: Alesandrini, Carlo G. Jr.

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

A process is disclosed for the production of a chlorothioformate of the formula , in which R is alkyl lower cycloalkyl-methyl, lower cycloalkyl lower alkenyl, phenyl, chloro-substituted phenyl benzyl or chloro-substituted, alkyl in which the chloro-substituent is situated at least as far as the gamma-carbon atom with respect to the sulfur atom. The process is conducted in two stages both occurring a con-, tinuous liquid phase in the presence of an activated carbon catalyst.

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 April 14, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 14, 1998.
  • 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 26, 1976
GrantedApril 14, 1981
Term endedApril 14, 1998
Patent numberCA 1099280 A
Classification (IPC)C07C329/00

Timeline

Timeline From CIPO dates

19771980198319861989199219951998Application filedNov 26, 1976Patent grantedApril 14, 1981Term endedApril 14, 1998

Sources & verification

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