Lancashire, United Kingdom

John David Hepworth

This inventor holds 4 USPTO granted patents and 1 EPO patent. Top assignee: James Robinson Limited. Active years: 2001-2002.

IDiyas Innovation Intelligence. (2026). Inventor Profile: John David Hepworth. Retrieved from https://idiyas.com/inventor/john-david-hepworth

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


% Patents Active = 75.0


Average Co-Inventor Count = 6.0

ph-index = 3

Forward Citations = 49(Granted Patents)


Company Filing History:


Years Active: 2001-2002

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4 patents (USPTO):Explore Patents

Title: John David Hepworth: Innovator in Photochromic Compounds

Introduction

John David Hepworth is a notable inventor based in Lancashire, GB. He has made significant contributions to the field of photochromic compounds, holding a total of 4 patents. His work focuses on innovative materials that have practical applications in various industries.

Latest Patents

Hepworth's latest patents include advancements in grey coloring photochromic fused pyrans. This invention involves a photochromic grey coloring 2H-naphtho[1,2-b]pyran, which can be combined with polymeric host materials such as plastic or glass. These compounds are designed for use in sunglass lenses, ophthalmic lenses, and windows. Additionally, he has developed photochromic compounds with complex chemical structures that can be utilized in inks and fuels.

Career Highlights

John David Hepworth is associated with James Robinson Limited, where he applies his expertise in the development of innovative materials. His work has garnered attention for its potential to enhance everyday products through advanced chemical formulations.

Collaborations

Hepworth collaborates with David A Clarke, contributing to the innovative projects at their company. Their combined efforts aim to push the boundaries of material science and its applications.

Conclusion

John David Hepworth's contributions to the field of photochromic compounds highlight his role as a significant inventor. His innovative patents and collaborations continue to influence the development of advanced materials in various industries.

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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