Hyogo, Japan

Ryougi Ishii

This inventor holds 1 USPTO granted patent. Top assignee: Dainichi-Nippon Cables, Ltd.. Active years: 1981.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ryougi Ishii. Retrieved from https://idiyas.com/inventor/ryougi-ishii

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 = 5(Granted Patents)


Company Filing History:


Years Active: 1981

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1 patent (USPTO):Explore Patents

Title: Ryougi Ishii: Innovator in Gold and Silver Recovery Processes

Introduction

Ryougi Ishii is a notable inventor based in Hyogo, Japan. He has made significant contributions to the field of chemical engineering, particularly in processes related to the recovery of precious metals. His innovative approach has led to the development of a unique method for treating liquids containing Au-CN compounds.

Latest Patents

Ryougi Ishii holds a patent for a process titled "Process for treating liquid containing Au-CN compound." This invention focuses on the treatment of liquids containing Au-CN and Ag-CN compounds. The process allows for the decomposition of these compounds while simultaneously facilitating the separation and recovery of gold and silver from the liquid. The method involves heating the liquid to a temperature of at least 170 degrees Celsius in the presence of a water-soluble metallic hydroxide, ensuring a high recovery rate of the precious metals.

Career Highlights

Ryougi Ishii is currently employed at Dainichi-Nippon Cables, Ltd., where he continues to apply his expertise in chemical processes. His work has been instrumental in advancing techniques for metal recovery, contributing to both environmental sustainability and economic efficiency in the industry.

Collaborations

Ryougi Ishii collaborates with Michihide Okugawa, enhancing the innovative capabilities within their field. Their partnership exemplifies the importance of teamwork in driving technological advancements.

Conclusion

Ryougi Ishii's contributions to the field of metal recovery through his patented processes highlight his role as an influential inventor. His work not only advances industrial practices but also promotes sustainable methods for precious metal extraction.

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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