US 6218429
Tricyclic compounds, their production and use
expired A61PA61P15/00A61P15/16
Quick answer
US patent 6218429 (Tricyclic compounds, their production and use) held by Takeda Chemical Industries Ltd. expires Mon Apr 12 2021 00:00:00 GMT+0000 (Coordinated Universal Time). Status: expired.
Key facts
- Applicant
- Takeda Chemical Industries Ltd.
- Grant date
- Tue Apr 17 2001 00:00:00 GMT+0000 (Coordinated Universal Time)
- Expiration
- Mon Apr 12 2021 00:00:00 GMT+0000 (Coordinated Universal Time)
- Claims
- 10
- CPC classes
- A61P, A61P15/00, A61P15/16, A61P15/18, A61P25/00