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Expired Canadian patentCanada

Process for the production of n, n-bis (hydroxyalkyl) taurine-salts

CA 1104155 A · Owner: Basf Wyandotte Corporation · Inventors: Login, Robert B.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

The subject invention relates to a process for the preparation of the N,N-bis(hydroxyalkyl) taurine salts. These compounds are useful in the preparation of novel polyesters entering in the composition of polymeric shaped objects as antistatic additives.

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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 30, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 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.
FiledOctober 24, 1980
GrantedJune 30, 1981
Term endedJune 30, 1998
Patent numberCA 1104155 A
Classification (IPC)C07C303/32 +1 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Application filedOct 24, 1980Patent grantedJune 30, 1981Term endedJune 30, 1998

Sources & verification

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