Novel carbapenem derivatives
CA 2338816 A1 · Owner: Akiyama, Yoshihisa · Inventors: Ida, Takashi; Atsumi, Kunio; Kitagawa, Hideo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel compounds having a broad antibacterial activity over gram-positive and gram-negative bacteria, in particular, a potent antibacterial effect on .beta.lactamase producing bacteria, MRSA, tolerant Pseudomonas aeruginosa DRSP, Enterococcus and Haemophilus influenzae and an extremely high stability to DHP- 1. These compounds are those represented by general formula (I) pharmaceutically acceptable salts thereof and esters of the carboxylic acid at the 3-position of the carbapenem ring thereof.
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
- Filed July 27, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 27, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 27, 2021.
- 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.