US 6194419
Nitrogen-containing heterocyclic compounds, their production and use
expired A61KA61K31/506A61P
Quick answer
US patent 6194419 (Nitrogen-containing heterocyclic compounds, their production and use) held by Takeda Chemical Industries Ltd. expires Mon Feb 22 2021 00:00:00 GMT+0000 (Coordinated Universal Time). Status: expired.
Key facts
- Applicant
- Takeda Chemical Industries Ltd.
- Grant date
- Tue Feb 27 2001 00:00:00 GMT+0000 (Coordinated Universal Time)
- Expiration
- Mon Feb 22 2021 00:00:00 GMT+0000 (Coordinated Universal Time)
- Claims
- 1
- CPC classes
- A61K, A61K31/506, A61P, A61P15/18, A61P5/02