Bristol, United Kingdom

David C Johnson

This inventor holds 1 USPTO granted patent. Top assignee: Tenneco Chemicals, Inc.. Active years: 1980.

IDiyas Innovation Intelligence. (2026). Inventor Profile: David C Johnson. Retrieved from https://idiyas.com/inventor/david-c-johnson-6bl1wfh2

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 = 3.0

ph-index = 1

Forward Citations = 13(Granted Patents)


Company Filing History:


Years Active: 1980

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1 patent (USPTO):Explore Patents

Title: David C Johnson: Innovator in Paper Sizing Agents

Introduction

David C Johnson is a notable inventor based in Bristol, GB. He has made significant contributions to the field of paper-making through his innovative work on sizing agents. His expertise and creativity have led to the development of a unique solution that enhances the quality of paper products.

Latest Patents

David C Johnson holds a patent for a sizing agent used in paper-making. This agent comprises an aqueous emulsion of at least one compound of specific formulae, where each R¹ represents a hydrophobic group selected from alkyl, alkenyl, aralkyl, or aralkenyl groups. The R¹ groups may vary and collectively contain from 25 to 60 carbon atoms. This sizing agent is effective for both internal and surface sizing, demonstrating its versatility in the paper-making process.

Career Highlights

David is associated with Tenneco Chemicals, Inc., where he applies his knowledge and skills to advance the company's innovations in chemical solutions. His work has not only contributed to the company's success but has also impacted the broader industry.

Collaborations

Throughout his career, David has collaborated with talented individuals such as Ian R Hiskens and Michael J Caudwell. These partnerships have fostered a creative environment that encourages the development of groundbreaking solutions in the field.

Conclusion

David C Johnson's contributions to the paper-making industry through his innovative sizing agents exemplify the importance of creativity and collaboration in driving advancements. His work continues to influence the quality of paper products, showcasing the impact of dedicated inventors in the field.

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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