Patent Yard Sign in
Expired Canadian patentCanada

Complexed compounds of inorganic salts, proton-acids or ansolvo-acids with 1,2,3-triols, glycerol monoethers or glycerol monothioethers and the preparation thereof

CA 1103689 A · Owner: Ciba-Geigy Investments Ltd. · Inventors: Wirth, Hermann O.; Friedrich, Hans-Helmut

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

Metal or metalloid salts ansolvo-acids and proton-, acids can be 80 complexed with 1,2,3-triols glycerol ethers, or glycerol thioethers containing at least 6 C atoms in the molecule that they are in the form of compositions which are soluble in organic solvents, especially non-polar aprotic, solvents, such as hydrocarbons. These stable compositions display an outstanding anti-static action and because of their, spectrum of properties are especially suitable for imparting, anti-static characteristics to polymers lubricants, fuels and, also solvents based on hydrocarbons.

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 23, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 23, 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.
FiledSeptember 6, 1977
GrantedJune 23, 1981
Term endedJune 23, 1998
Patent numberCA 1103689 A
Classification (IPC)C07C43/11 +2 more

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedSep 6, 1977Patent grantedJune 23, 1981Term endedJune 23, 1998

Sources & verification

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