Benzhydrylsulphinyl derivatives
CA 1079275 A · Owner: Laboratoire L. Lafon · Inventors: Lafon, Louis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides the benzhydrylsulph?nyl derivatives of the formula:, (C6H5)2CH-SO-(CH2)n-R I where n is 1, 2 or 3 and R is C(=O)NHOH C(=NH)NH2, C(=NH)NHOH, 2-.DELTA.2-imidazolinyl or NR1R2 (where R1 is H or C1-C3-alkyl and R2 is H, C1-C3-alkyl, or CH2CH2OH and R1, and R2 considered together can form with the nitrogen atom, to which they are bonded a N-heterocyclic group of 5 to 7, ring members which can be substituted and can contain a second hetero-atom such as O and N), and their addition salts. These products are useful in therapy for treating disturbances of the central nervous system.
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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 10, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 10, 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.
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.