Niihama, Japan

Hideki Ohara

This inventor holds 20 USPTO granted patents and 1 published patent application, plus 17 CIPO patents and 4 EPO patents, primarily in Nickel Cobalt Production. Top assignees: Sumitomo Metal Mining Company, Ltd., Kochi University, Sumitomo Metal Mining., Ltd.. Active years: 2016-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hideki Ohara. Retrieved from https://idiyas.com/inventor/hideki-ohara

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

Calculating rank
USPTO Granted Patents = 20 

% Patents Active = 35.0

 

 

Average Co-Inventor Count = 5.0

ph-index = 2

Forward Citations = 12(Granted Patents)


Location History:

  • Ehime, JP (2016 - 2018)
  • Niihama, JP (2016 - 2020)

Company Filing History:


Years Active: 2016-2026

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Areas of Expertise:
Cobalt Sulfate
Nickel Powder
Hydrometallurgy
High-Purity Solutions
Aqueous Refinement
Wastewater Treatment
Cobalt Chloride
Hematite Manufacturing
Seed Crystals
Nickel Oxide Ore
Cobalt Solutions
Nickel Sulfate
20 patents (USPTO):Explore Patents

Title: Innovations of Inventor Hideki Ohara

Introduction

Hideki Ohara is a prominent inventor based in Niihama, Japan. He has made significant contributions to the field of materials science, particularly in the production of nickel and cobalt solutions. With a total of 18 patents to his name, Ohara's work has had a substantial impact on various industrial processes.

Latest Patents

One of his latest patents is a method for manufacturing a nickel and cobalt-containing solution from hydroxide containing nickel and cobalt. This innovative method involves several steps, including preparing a crude nickel hydroxide and/or a crude cobalt hydroxide, water-washing, leaching, neutralization, and solvent extraction. The process effectively reduces impurities while obtaining a solution rich in cobalt and nickel. Another notable patent is a method for producing high-density nickel powder. This method focuses on controlling the particle size of nickel powder, achieving a median diameter of 100 to 160 micrometers. The process includes charging a pressure vessel with a nickel ammine complex solution and performing a reduction reaction with hydrogen to obtain nickel powder with specific bulk density characteristics.

Career Highlights

Throughout his career, Hideki Ohara has worked with reputable organizations, including Sumitomo Metal Mining Company, Ltd. and Kochi University. His experience in these institutions has allowed him to refine his expertise in materials science and contribute to various research projects.

Collaborations

Ohara has collaborated with notable coworkers such as Yoshitomo Ozaki and Shin-ichi Heguri. These partnerships have facilitated the exchange of ideas and advancements in their respective fields.

Conclusion

Hideki Ohara's innovative work in the production of nickel and cobalt solutions and high-density nickel powder showcases his significant contributions to materials science. His patents reflect a commitment to advancing industrial processes and improving efficiency 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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