{"@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [{"@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.patentleaderboard.com/"}, {"@type": "ListItem", "position": 2, "name": "Process for preparing primary intermediates for dyeing keratin fibers", "item": "https://www.patentleaderboard.com/patent/9012691"}]}
Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Process for preparing primary intermediates for dyeing keratin fibers

Process for preparing primary intermediates for dyeing keratin fibers

US Patent 9012691 · Granted Apr 21, 2015

Estimated economic value: $71,248,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Odorless thiols for permanent waving, straightening and depilatory applications2025
Method for colouring hair including pretreatment2025
Method for colouring hair including pretreatment2025
Oxidative dye couplers with novel auxochrome substituents and azomethine dyes an2022
Keratin dyeing compounds, compositions containing them, and method and use there2021
Hair colouration formulation2020
Hair colouration formulation2020
Cationic direct dyes2019
Stable yellow imidazolium compounds2018
Stable yellow imidazolium compounds2018
Method of coloring hair with washfast blue imidazolium direct dye compounds2018
Hair color compositions comprising stable violet-blue to blue imidazolium dyes2018