Wednesday, July 8, 2026

Patent intelligence · US

US 6284258

Long-acting, chemical-resistant skin emollients, moisturizers, and strengtheners

expired A61KA61K2800/522A61K2800/94A61K8/46
Status expired
Linked drugs 3
Pipeline programs 6
Years to expiry 0
Applicant portfolio 8,292
Patent details — US 6284258
Jurisdiction
US
Status
expired
Grant date
Sep 4, 2001
Expiration
Aug 30, 2021
Claims
3
CPC classes
A61K, A61K2800/522, A61K2800/94, A61K8/46
View on Google Patents ↗

Quick answer

US 6284258 (Long-acting, chemical-resistant skin emollients, moisturizers, and strengtheners) is held by THE ARIZONA BOARD OF REGENTS. Status: expired. Granted Sep 4, 2001. Expires Aug 30, 2021 (0 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
3
CPC classes
A61K, A61K2800/522, A61K2800/94, A61K8/46, A61K8/86, A61P

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Frequently asked questions

What is US patent 6284258?

US 6284258 (Long-acting, chemical-resistant skin emollients, moisturizers, and strengtheners) is held by THE ARIZONA BOARD OF REGENTS. Status: expired. Granted Sep 4, 2001. Expires Aug 30, 2021 (0 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 6284258?

THE ARIZONA BOARD OF REGENTS is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 8,292 pharmaceutical patents for this assignee.

When does US 6284258 expire?

Our index shows an expiration date of Aug 30, 2021 (0 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.