Cephalosporin compounds
CA 1100129 A · Owner: Eli Lilly And Company · Inventors: Lunn, William H.W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a new class of cephalosporin compounds having in the 3-position a 5-oxo-6-hydroxy-4,5-dihydro-1,2,4-triazin-3-ylthiomethyl group and to a process for the preparation thereof characterized by reacting a 3-acetoxymethylcephalosporin compound with a 3-mercapto-5-oxo-6-hydxoxy-4,5-dihydro-1,2,4-triazine. The 3-triazinylthiomethylcephalosporin compounds have excellent broad spectrum gram-positive and gramnegative antibiotic activity. X-4273A
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 April 28, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 28, 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.
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.