This inventor holds 23 USPTO granted patents, primarily in Hair Dye Technology. Top assignees: Clairol Incorporated, Bristol-Myers Squibb Compnay, Henkel Ag & Company, Kgaa. Active years: 1983-2004.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
21 out of 283 
1 out of 3,745 
1 out of 4,541 
Years Active: 1983-2004
Areas of Expertise:
Title: Leszek J. Wolfram – Innovator in Dyes and Colorants
Introduction
Leszek J. Wolfram is a distinguished inventor located in Stamford, CT, USA, renowned for his contributions to the field of dyes and colorants. With an impressive portfolio of 23 patents, he has significantly advanced technologies for coloring keratin fibers and skin.
Latest Patents
Among his latest innovations, Wolfram developed a hybrid dye designed for effective coloring of keratin fibers and skin. This hybrid dye, characterized by the structure X-S-Y, incorporates a substantive dye (X), an oxidation dye precursor or melanin precursor (Y), and a direct bond or spacer group (S). Wolfram's patent also includes a composition specifically formulated for coloring keratin fibers utilizing this hybrid dye.
Another significant patent by Wolfram pertains to a process for manufacturing an innovative hair dye product. This aqueous hair dyeing composition is distinguished by its effective dyeing amount - at least 2 mg/ml of 5,6-dihydroxyindole (DHI). The method involves the reaction of dopa or its salt with an alkali metal ferricyanide oxidant under anaerobic conditions, leading to the formation of dopachrome. The subsequent rearrangement in a buffered aqueous medium results in DHI, creating a novel and effective hair dyeing solution.
Career Highlights
Leszek J. Wolfram has worked with prominent companies in the cosmetic and hair care industry, including Clairol Incorporated and Henkel Kommanditgesellschaft Auf Aktien. His tenure at these organizations has allowed him to hone his expertise and contribute positively to their innovative product lines.
Collaborations
Wolfram's innovative journey has seen him collaborate with notable colleagues, including Keith C. Brown and Giuseppe Prota. Their collaborative efforts have further fueled advancements in the field of colorants and hair dye technologies.
Conclusion
In conclusion, Leszek J. Wolfram stands out as a notable inventor in the domain of dyes and colorants, with several patents that reflect his dedication to innovation. His latest contributions promise to enhance the future of hair and skin coloring solutions, making significant impacts in the cosmetic industry.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile