Wednesday, July 8, 2026

Patent intelligence · US

US 6025399

Method of producing neuromuscular block by the use of tetra-propyl or tetrabutylammonium compounds

expired A61KA61K31/14A61K31/435A61K31/565
Status expired
Linked drugs 3
Pipeline programs 6
Years to expiry 0
Applicant portfolio 72
Patent details — US 6025399
Jurisdiction
US
Status
expired
Grant date
Feb 15, 2000
Expiration
Feb 10, 2020
Claims
11
CPC classes
A61K, A61K31/14, A61K31/435, A61K31/565
View on Google Patents ↗

Quick answer

US 6025399 (Method of producing neuromuscular block by the use of tetra-propyl or tetrabutylammonium compounds) is held by Montefiore Medical Center. Status: expired. Granted Feb 15, 2000. Expires Feb 10, 2020 (0 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
11
CPC classes
A61K, A61K31/14, A61K31/435, A61K31/565, A61K45/06

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Frequently asked questions

What is US patent 6025399?

US 6025399 (Method of producing neuromuscular block by the use of tetra-propyl or tetrabutylammonium compounds) is held by Montefiore Medical Center. Status: expired. Granted Feb 15, 2000. Expires Feb 10, 2020 (0 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 6025399?

Montefiore Medical Center is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 72 pharmaceutical patents for this assignee.

When does US 6025399 expire?

Our index shows an expiration date of Feb 10, 2020 (0 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.