Danville, CA, United States of America

Roger K Clifford

This inventor holds 1 USPTO granted patent. Top assignee: Chevron Research Company. Active years: 1987.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Roger K Clifford. Retrieved from https://idiyas.com/inventor/roger-k-clifford

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 = 2.0

ph-index = 1

Forward Citations = 39(Granted Patents)


Company Filing History:


Years Active: 1987

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1 patent (USPTO):Explore Patents

Title: Roger K Clifford: Innovator in Bitumen Recovery

Introduction

Roger K Clifford is a notable inventor based in Danville, CA (US). He has made significant contributions to the field of chemical engineering, particularly in the recovery of bitumen from tar sands. His innovative approach has led to advancements in the efficiency of extraction processes.

Latest Patents

Roger K Clifford holds a patent for a "Solvent extraction process for recovering bitumen from tar sand." This patent describes a method for recovering bitumen through direct solvent extraction, followed by washing the sand tailings with countercurrent solvent flow. The process also includes a solvent/aqueous phase separation step to recover both the solvent and residual bitumen. This innovation is crucial for improving the sustainability and efficiency of bitumen extraction.

Career Highlights

Roger K Clifford is associated with Chevron Research Company, where he has applied his expertise in chemical processes. His work has contributed to the development of more effective methods for resource recovery, aligning with the company's commitment to innovation in energy production.

Collaborations

Throughout his career, Roger has collaborated with various professionals, including his coworker C Richard Hsieh. These collaborations have fostered a productive environment for research and development, leading to impactful innovations in the field.

Conclusion

Roger K Clifford's contributions to the field of bitumen recovery exemplify the importance of innovation in resource extraction. His patented processes not only enhance efficiency but also promote sustainable practices in the industry.

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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