Patent intelligence · US
US 6506374
Hair coloring composition and method
Hair coloring composition and method
Patent details — US 6506374
- Jurisdiction
- US
- Status
- expired
- Grant date
- Jan 14, 2003
- Expiration
- Jan 9, 2023
- Applicant
- HairMarker LLC
- Claims
- 19
- CPC classes
- A61K, A61K2800/43, A61K8/8182
Quick answer
US 6506374 (Hair coloring composition and method) is held by HairMarker LLC. Status: expired. Granted Jan 14, 2003. Expires Jan 9, 2023 (0 years remaining) — relevant for patent-cliff and LOE planning.
Key facts
- Applicant
- HairMarker LLC
- Grant date
- Expiration
- Claims
- 19
- CPC classes
- A61K, A61K2800/43, A61K8/8182
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Frequently asked questions
What is US patent 6506374?
US 6506374 (Hair coloring composition and method) is held by HairMarker LLC. Status: expired. Granted Jan 14, 2003. Expires Jan 9, 2023 (0 years remaining) — relevant for patent-cliff and LOE planning.
Who owns US 6506374?
HairMarker LLC is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 27 pharmaceutical patents for this assignee.
When does US 6506374 expire?
Our index shows an expiration date of Jan 9, 2023 (0 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.