Patent intelligence · US
US 6376461
Sustained-release preparation
Sustained-release preparation
Patent details — US 6376461
- Jurisdiction
- US
- Status
- expired
- Grant date
- Apr 23, 2002
- Expiration
- Apr 18, 2022
- Applicant
- Takeda Chemical Industries Ltd.
- Claims
- 17
- CPC classes
- A61K, A61K31/00, A61K38/1816, A61K38/193
Quick answer
US 6376461 (Sustained-release preparation) is held by Takeda Chemical Industries Ltd.. Status: expired. Granted Apr 23, 2002. Expires Apr 18, 2022 (0 years remaining) — relevant for patent-cliff and LOE planning.
Key facts
- Applicant
- Takeda Chemical Industries Ltd.
- Grant date
- Expiration
- Claims
- 17
- CPC classes
- A61K, A61K31/00, A61K38/1816, A61K38/193, A61K38/212, A61K38/27
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Frequently asked questions
What is US patent 6376461?
US 6376461 (Sustained-release preparation) is held by Takeda Chemical Industries Ltd.. Status: expired. Granted Apr 23, 2002. Expires Apr 18, 2022 (0 years remaining) — relevant for patent-cliff and LOE planning.
Who owns US 6376461?
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 6376461 expire?
Our index shows an expiration date of Apr 18, 2022 (0 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.