Patent intelligence · US
US 6455531
Hydroxamic acid derivatives
Hydroxamic acid derivatives
Patent details — US 6455531
- Jurisdiction
- US
- Status
- expired
- Grant date
- Sep 24, 2002
- Expiration
- Sep 19, 2022
- Applicant
- Darwin Discovery Limited
- Claims
- 21
- CPC classes
- A61P, A61P11/00, A61P11/06, A61P19/00
Quick answer
US 6455531 (Hydroxamic acid derivatives) is held by Darwin Discovery Limited. Status: expired. Granted Sep 24, 2002. Expires Sep 19, 2022 (0 years remaining) — relevant for patent-cliff and LOE planning.
Key facts
- Applicant
- Darwin Discovery Limited
- Grant date
- Expiration
- Claims
- 21
- CPC classes
- A61P, A61P11/00, A61P11/06, A61P19/00, A61P25/00
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Frequently asked questions
What is US patent 6455531?
US 6455531 (Hydroxamic acid derivatives) is held by Darwin Discovery Limited. Status: expired. Granted Sep 24, 2002. Expires Sep 19, 2022 (0 years remaining) — relevant for patent-cliff and LOE planning.
Who owns US 6455531?
Darwin Discovery Limited is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 706 pharmaceutical patents for this assignee.
When does US 6455531 expire?
Our index shows an expiration date of Sep 19, 2022 (0 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.