Patent intelligence · US
US 6419961
Sustained release microcapsules of a bioactive substance and a biodegradable polymer
Sustained release microcapsules of a bioactive substance and a biodegradable polymer
Patent details — US 6419961
- Jurisdiction
- US
- Status
- expired
- Grant date
- Jul 16, 2002
- Expiration
- Jul 11, 2022
- Applicant
- Takeda Chemical Industries Ltd.
- Claims
- 9
- CPC classes
- A61K, A61K9/1647
Quick answer
US 6419961 (Sustained release microcapsules of a bioactive substance and a biodegradable polymer) is held by Takeda Chemical Industries Ltd.. Status: expired. Granted Jul 16, 2002. Expires Jul 11, 2022 (0 years remaining) — relevant for patent-cliff and LOE planning.
Key facts
- Applicant
- Takeda Chemical Industries Ltd.
- Grant date
- Expiration
- Claims
- 9
- CPC classes
- A61K, A61K9/1647
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Frequently asked questions
What is US patent 6419961?
US 6419961 (Sustained release microcapsules of a bioactive substance and a biodegradable polymer) is held by Takeda Chemical Industries Ltd.. Status: expired. Granted Jul 16, 2002. Expires Jul 11, 2022 (0 years remaining) — relevant for patent-cliff and LOE planning.
Who owns US 6419961?
Takeda Chemical Industries Ltd. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 1,436 pharmaceutical patents for this assignee.
When does US 6419961 expire?
Our index shows an expiration date of Jul 11, 2022 (0 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.