Dihydro thiazolo - and thiazinobenzimidazoles
CA 1270249 C · Owner: Crossley, Roger · Inventors: Crossley, Roger
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
2,3-DIHYDRO-THIAZOLO- AND THIAZINO-BENZIMIDAZOLES ABSTRACT, This invention relates to processes for preparing compounds of formula, (I), salts thereof wherein -B-B1- represents a chain of formula -(CHR5)n-CHR6- (Ia), R represents an optionally substituted aryl or heteroaryl radical, R1, R2, R3 and R4 independently represent hydrogen or a defined substituent or any adjacent pair of R1, R2, R3 and R4 together with the carbon atoms to which they are attached complete a five or six membered saturated or unsaturated carbocyclic or heterocyclic ring, said ring being optionally substituted by a defined substituent and said heterocyclic ring having at least one heteroatom selected from oxygen, …
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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 12, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 12, 2007.
- 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.