Hemel Hempstead, United Kingdom

David John Sheffield

This inventor holds 1 USPTO granted patent. Top assignee: Avdel Limited. Active years: 1976.

IDiyas Innovation Intelligence. (2026). Inventor Profile: David John Sheffield. Retrieved from https://idiyas.com/inventor/david-john-sheffield-of34nruq

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 2.0

ph-index = 1

Forward Citations = 3(Granted Patents)


Company Filing History:


Years Active: 1976

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1 patent (USPTO):Explore Patents

Title: The Innovative Contributions of David John Sheffield

Introduction

David John Sheffield is a notable inventor based in Hemel Hempstead, GB. He has made significant contributions to the field of fluid dispensing technology. His innovative designs have paved the way for advancements in how liquids, such as adhesives, are dispensed.

Latest Patents

David holds a patent for a "Valve for a fluid dispenser." This invention features a dispenser pen that effectively dispenses liquids through a tube connecting a supply of the liquid to a nozzle. The design includes a tube that passes between a cross-pin and a pivoted lever, which is normally urged by a spring to close the tube to the flow of liquid. The predeformed region of the tube allows for easy opening and closing with minimal force, enhancing the user experience.

Career Highlights

David is currently associated with Avdel Limited, where he continues to innovate and develop new technologies. His work has been instrumental in improving fluid dispensing mechanisms, making them more efficient and user-friendly.

Collaborations

David collaborates with his coworker, Harvey P Jeal, to further enhance their projects and share insights in their field of expertise.

Conclusion

David John Sheffield's contributions to fluid dispensing technology exemplify the spirit of innovation. His patent and ongoing work at Avdel Limited highlight his commitment to advancing this important area of technology.

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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