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For the Inventor, By the Inventor

Hitachi, Japan

Hideo Okada

This inventor holds 12 USPTO granted patents. Top assignees: Hitachi, Ltd., New Energy Development Organization. Active years: 1980-1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hideo Okada. Retrieved from https://idiyas.com/inventor/hideo-okada-sd4k6ka7

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

USPTO Granted Patents = 12

% Patents Active = 100.0

Average Co-Inventor Count = 6.4

ph-index = 8

Forward Citations = 206(Granted Patents)


Company Filing History:

goldMedal11 out of 42,740 
 
Hitachi, Ltd.
 patents
silverMedal1 out of 2 
 
New Energy Development Organization
 patents

Years Active: 1980-1990

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12 patents (USPTO):Explore Patents
1. 4943496 - Fuel cell, electrode for the cell and method of preparation thereof (1990-07-24),
2. 4810595 - Molten carbonate fuel cell, and its operation control method (1989-03-07),
3. 4699853 - Fuel cell (1987-10-13),
4. 4656735 - Process for producing an electrolyte retaining matrix of electrical (1987-04-14),
5. 4542079 - Fuel cell (1985-09-17),
6. 4480017 - Fuel cell (1984-10-30),
7. 4476199 - Fused carbonate fuel cell (1984-10-09),
8. 4446210 - Fuel cell electrode (1984-05-01),
9. 4436794 - Molten carbonate fuel cell (1984-03-13),
10. 4407905 - Fuel cell (1983-10-04),
11. 4207209 - Sintered cataltyic or absorbent metallic product and method for (1980-06-10),
12. 4206036 - Hydrodesulfurization of hydrocarbon oil with a catalyst including (1980-06-03),

Title: Hideo Okada: Innovator in Fuel Cell Technology

Introduction

Hideo Okada is a prominent inventor based in Hitachi, Japan, known for his significant contributions to fuel cell technology. With a total of 12 patents to his name, Okada has made remarkable advancements in the field, particularly in molten carbonate fuel cells.

Latest Patents

Among his latest patents, Okada has developed a molten carbonate type fuel cell that integrates two electrodes, an electrolyte plate, and separators into a single unit. This innovative design allows for a battery of unit cells to be stacked efficiently. The electrodes consist of a porous plate made from an electron-conducting material, such as nickel, with ceramic particles like magnesium oxide uniformly dispersed within. The preparation method involves mixing the electro-conducting material with an organic binder to create a slurry, which is then shaped, dried, and fired in a reducing atmosphere.

Another notable patent addresses the operation control method of a molten carbonate fuel cell. This invention aims to enhance the performance and stability of the fuel cell by managing the feed of reaction gases. Okada's findings suggest that temporarily shutting off or reducing the feed of gases can improve the output of the fuel cell, thereby offering a high-performance solution for energy generation.

Career Highlights

Throughout his career, Hideo Okada has worked with esteemed organizations such as Hitachi, Ltd. and the New Energy Development Organization. His work has significantly impacted the development of fuel cell technologies, making him a key figure in the industry.

Collaborations

Okada has collaborated with notable colleagues, including Masato Takeuchi and Sigeru Okabe, contributing to various projects that advance fuel cell technology.

Conclusion

Hideo Okada's innovative work in fuel cell technology has led to significant advancements in energy solutions. His patents reflect a deep understanding of the complexities involved in fuel cell operation and design. Okada's contributions continue to influence the future of energy generation.

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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