Dorking, United Kingdom

David O Holland

This inventor holds 1 USPTO granted patent. Top assignee: Combe Inc.. Active years: 1982.

IDiyas Innovation Intelligence. (2026). Inventor Profile: David O Holland. Retrieved from https://idiyas.com/inventor/david-o-holland

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile


% Patents Active = 100.0

Average Co-Inventor Count = 1.0

ph-index = 1

Forward Citations = 2(Granted Patents)


Company Filing History:


Years Active: 1982

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1 patent (USPTO):Explore Patents

Title: The Innovations of David O Holland

Introduction

David O Holland is a notable inventor based in Dorking, GB. He has made significant contributions to the field of chemistry, particularly in the development of aqueous compositions for darkening keratinous materials, such as hair. His innovative approach combines various chemical components to achieve effective results.

Latest Patents

David O Holland holds a patent for an aqueous composition designed for darkening keratinous materials. This composition includes a mixture of a solution of a salt of thiosulphuric acid, preferably sodium thiosulphate, and a complex of bismuth with an amino-polyacetic acid. The formulation is designed to maintain a pH range of 8 to 11, utilizing water-soluble amines and humectants like glycerol or propylene glycol.

Career Highlights

David O Holland is associated with Combe Inc., where he applies his expertise in chemistry to develop innovative products. His work has led to advancements in hair care formulations, showcasing his commitment to improving consumer products through scientific research.

Collaborations

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Conclusion

David O Holland's contributions to the field of chemistry and his innovative patent for hair darkening compositions highlight his role as a significant inventor. His work continues to influence the industry and improve product offerings for consumers.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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