US 6552054
Chromone derivatives, process for the preparation of the same and uses thereof
expired A61PA61P19/02A61P19/08
Quick answer
US patent 6552054 (Chromone derivatives, process for the preparation of the same and uses thereof) held by Takeda Chemical Industries Ltd. expires Mon Apr 17 2023 00:00:00 GMT+0000 (Coordinated Universal Time). Status: expired.
Key facts
- Applicant
- Takeda Chemical Industries Ltd.
- Grant date
- Tue Apr 22 2003 00:00:00 GMT+0000 (Coordinated Universal Time)
- Expiration
- Mon Apr 17 2023 00:00:00 GMT+0000 (Coordinated Universal Time)
- Claims
- 18
- CPC classes
- A61P, A61P19/02, A61P19/08, A61P19/10, A61P29/00