Oxidation Dye Precursor, Amino Silicone, Polyol Composition for Keratin Fiber Dyeing
Summary
USPTO granted L'Oréal Patent US12605319B2 for a composition comprising an oxidation base (2-β-hydroxyethyl-para-phenylenediamine), a (poly)oxyalkylenated amino silicone, and a polyol. The patent, with a filing date of December 9, 2022, contains 19 claims and covers processes for dyeing keratin fibers, preferably hair. Inventors are Valérie Nicou and Laurence Corn-Gourinel.
“The invention relates to a composition comprising at least one oxidation base chosen from 2-β-hydroxyethyl-para-phenylenediamine of formula (I), an addition salt thereof, solvates thereof and/or solvates of the salts thereof, at least one (poly)oxyalkylenated amino silicone and at least one polyol.”
About this source
GovPing monitors USPTO Patent Grants - Pharma (A61K) for new healthcare & life sciences regulatory changes. Every update since tracking began is archived, classified, and available as free RSS or email alerts — 22 changes logged to date.
What changed
USPTO granted L'Oréal patent US12605319B2 covering a composition combining an oxidation base (2-β-hydroxyethyl-para-phenylenediamine), a (poly)oxyalkylenated amino silicone, and at least one polyol for dyeing keratin fibers. The patent also claims the process for applying the composition to hair.
Cosmetics and hair care manufacturers developing oxidation hair dye formulations should review this patent to assess potential freedom-to-operate considerations or licensing opportunities, particularly for products combining amine-functional silicones with polyol carriers and oxidation dye precursors.
Archived snapshot
Apr 22, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Composition comprising a particular oxidation dye precursor, a particular amino silicone and a polyol
Grant US12605319B2 Kind: B2 Apr 21, 2026
Assignee
L'Oréal
Inventors
Valérie Nicou, Laurence Corn-Gourinel
Abstract
The invention relates to a composition comprising at least one oxidation base chosen from 2-β-hydroxyethyl-para-phenylenediamine of formula (I), an addition salt thereof, solvates thereof and/or solvates of the salts thereof, at least one (poly)oxyalkylenated amino silicone and at least one polyol. The invention also relates to a process for dyeing keratin fibers, preferably the hair, which comprises the application of the composition to said keratin fibers.
CPC Classifications
A61K 8/411 A61K 2800/43 A61K 2800/5422 A61K 2800/591 A61K 8/41 A61K 8/49 A61K 8/585 A61K 8/89 A61K 8/894 A61Q 5/10
Filing Date
2022-12-09
Application No.
18717311
Claims
19
Mentioned entities
Parties
Related changes
Get daily alerts for USPTO Patent Grants - Pharma (A61K)
Daily digest delivered to your inbox.
Free. Unsubscribe anytime.
Source
About this page
Every important government, regulator, and court update from around the world. One place. Real-time. Free. Our mission
Source document text, dates, docket IDs, and authority are extracted directly from USPTO.
The summary, classification, recommended actions, deadlines, and penalty information are AI-generated from the original text and may contain errors. Always verify against the source document.
Classification
Who this affects
Taxonomy
Browse Categories
Get alerts for this source
We'll email you when USPTO Patent Grants - Pharma (A61K) publishes new changes.
Subscribed!
Optional. Filters your digest to exactly the updates that matter to you.