Expired Canadian patentCanada
Bis(2 mercapto-2-imidazolin-1-yl thio carbonyl) sulphide and method of preparing the same
CA 601172 A · Owner: E.I. Du Pont De Nemours And Company · Inventors: Albert L. Flenner
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordRead 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 July 5, 1960. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 5, 1977.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJuly 5, 1960
Term endedJuly 5, 1977
Patent numberCA 601172 A
Classification (IPC)C07D
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.