Wednesday, July 8, 2026

Patent intelligence · US

US 6015659

Inducement of thermotolerance with benzoquinonoid ansamycins

expired A61PA61P43/00
Status expired
Linked drugs 3
Pipeline programs 6
Years to expiry 0
Applicant portfolio 8,292
Patent details — US 6015659

Quick answer

US 6015659 (Inducement of thermotolerance with benzoquinonoid ansamycins) is held by The Regents of the University of California. Status: expired. Granted Jan 18, 2000. Expires Jan 13, 2020 (0 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
24
CPC classes
A61P, A61P43/00

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Frequently asked questions

What is US patent 6015659?

US 6015659 (Inducement of thermotolerance with benzoquinonoid ansamycins) is held by The Regents of the University of California. Status: expired. Granted Jan 18, 2000. Expires Jan 13, 2020 (0 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 6015659?

The Regents of the University of California is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 8,292 pharmaceutical patents for this assignee.

When does US 6015659 expire?

Our index shows an expiration date of Jan 13, 2020 (0 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.