Expired Canadian patentCanada
Manufacture of tertiary mercaptans using zeolite catalysts
CA 1092160 A · Owner: Pennwalt Corporation · Inventors: Buchholz, Bernard
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Invention, Certain synthetic zeolites have been found to provide high conversion over extended periods when used as catalysts in the addition reaction of hydrogen sulfide with branched unsymmetrical olefins to, produce tertiary mercaptans.
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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 December 23, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 23, 1997.
- 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 15, 1978
GrantedDecember 23, 1980
Term endedDecember 23, 1997
Patent numberCA 1092160 A
Classification (IPC)B01J29/08 +1 more
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.