Patent Yard Sign in
Expired Canadian patentCanada

2-formylamino-phenylguanidines, processes for their preparation and their use as medicaments

CA 1104154 A · Owner: Bayer Aktiengesellschaft · Inventors: Kolling, Heinrich; Thomas, Herbert; Wollweber, Hartmund

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

2-Formylamino-phenylguanidine, processes for their preparation and their use as medicaments. Abstract of the Disclosure N-(2-formamidophenyl)-N',N"-bis-carbonylguanidines bearing an optionally substituted phenoxy phenyl-, thio, phenylsulfinyl or phenylsulfonyl group in the 4- or 5-position of the 2-(formamido)-phenyl group are anthelmintic agents. The compounds, of which N-(2-formamido-4 phenylthiophenyl)-N',N"-bis-carbomethoxyguanidine is a typical example, are prepared through the reaction of isothiourea-S-alkyl ether and an appropriately substituted 2aminoformanilide. Le A 16 986, - 1 -

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 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.
FiledMarch 9, 1977
GrantedJune 30, 1981
Term endedJune 30, 1998
Patent numberCA 1104154 A
Classification (IPC)C07C279/24

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedMarch 9, 1977Patent 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.