🇺🇸 FDA
Patent

US 6419961

Sustained release microcapsules of a bioactive substance and a biodegradable polymer

expired A61KA61K9/1647

Quick answer

US patent 6419961 (Sustained release microcapsules of a bioactive substance and a biodegradable polymer) held by Takeda Chemical Industries Ltd. expires Mon Jul 11 2022 00:00:00 GMT+0000 (Coordinated Universal Time). Status: expired.

Key facts

Applicant
Takeda Chemical Industries Ltd.
Grant date
Tue Jul 16 2002 00:00:00 GMT+0000 (Coordinated Universal Time)
Expiration
Mon Jul 11 2022 00:00:00 GMT+0000 (Coordinated Universal Time)
Claims
9
CPC classes
A61K, A61K9/1647