Sapporo, Japan

Tatsuo Ishikawa

This inventor holds 2 USPTO granted patents. Top assignee: Nippon Light Metal Company, Ltd.. Active years: 1979.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tatsuo Ishikawa. Retrieved from https://idiyas.com/inventor/tatsuo-ishikawa-boaav7jq

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 = 2.7

ph-index = 2

Forward Citations = 17(Granted Patents)


Company Filing History:


Years Active: 1979

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2 patents (USPTO):Explore Patents

Title: Innovations of Tatsuo Ishikawa in Aluminum Production

Introduction

Tatsuo Ishikawa is a notable inventor based in Sapporo, Japan. He has made significant contributions to the field of aluminum production, holding a total of 2 patents. His work focuses on improving the efficiency and effectiveness of aluminum electrolytic processes.

Latest Patents

Ishikawa's latest patents include an innovative aluminum electrolytic cell. This cell features a sealed design with a raw material aluminum chloride feeding port and chlorine gas discharging ports located in the top section. It also includes a molten metal reservoir in the bottom section, with an electrode element positioned in the intermediate section. The design allows for the electrolysis of a molten salt electrolytic bath containing aluminum chloride, resulting in the collection of molten aluminum from the reservoir. The electrode element is constructed from funnel-shaped electrodes or a pair of opposing electrode plate groups, ensuring a fixed separation to prevent the rechlorination of aluminum after electrolysis.

Another significant patent is a process for electrolytically producing aluminum. This process involves electrolyzing fused aluminum chloride along with an alkali metal halide. The method produces chlorine gas at the anode surface and molten aluminum at the cathode surface. The electrolytic bath consists of a molten mixed salt, which includes specific percentages of AlCl3, CaCl2, MgCl2, and NaCl. This innovative approach allows for the production of metallic aluminum with high current efficiency, reaching nearly 100%.

Career Highlights

Tatsuo Ishikawa is currently associated with Nippon Light Metal Company, Ltd. His work at this company has been instrumental in advancing aluminum production technologies. His patents reflect a deep understanding of electrolysis and materials science, contributing to more sustainable and efficient aluminum manufacturing processes.

Collaborations

Ishikawa has collaborated with notable coworkers, including Hachiro Ichikawa and Toshiaki Iuchi. Their combined expertise has likely enhanced the development and implementation of innovative solutions in aluminum production.

Conclusion

Tatsuo Ishikawa's contributions to aluminum production through his patents demonstrate his innovative spirit and technical expertise. His work continues to influence the industry, paving the way for more efficient and sustainable practices in aluminum manufacturing.

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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