Niihama, Japan

Masao Yoshihara

This inventor holds 3 USPTO granted patents. Top assignees: Sumitomo Chemical Company, Limited, Sumitomo Aluminium Smelting Company, Ltd.. Active years: 1976-1980.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masao Yoshihara. Retrieved from https://idiyas.com/inventor/masao-yoshihara

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 = 3.3

ph-index = 3

Forward Citations = 34(Granted Patents)


Location History:

  • Niihama, JA (1976)
  • Niihama, JP (1980)

Company Filing History:


Years Active: 1976-1980

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3 patents (USPTO):Explore Patents

Title: Masao Yoshihara: Pioneering Innovations in Alumina Production

Introduction

Masao Yoshihara, hailing from Niihama, Japan, is a notable inventor with a distinct focus on the production and extraction of alumina. With three patents to his name, Yoshihara has made significant contributions to the methods used in the alumina industry, showcasing his inventive spirit and technical expertise.

Latest Patents

Yoshihara's recent patents are exemplary of his innovative capabilities. The first, titled "Process for Producing Alumina Sols," details a method characterized by the neutralization of a water-soluble basic aluminum salt. This process enhances the efficiency of alumina sol production, contributing to advancements in material sciences.

His second patent, "Process for Extracting Alumina from Alumina-Containing Ores," describes a sophisticated process for extracting alumina effectively from ores. This method involves individually preheating a slurry of alumina-containing ores in an alkali solution and utilizing a digester at elevated temperatures. Notably, this process avoids scale formation inside the preheater, resulting in a prolonged operational duration. By ensuring that the slurry maintains an optimal molar ratio of sodium oxide to alumina throughout the preheating and extraction stages, Yoshihara's innovations signify a leap forward in alumina extraction technology.

Career Highlights

Throughout his career, Masao Yoshihara has been affiliated with industry leaders such as Sumitomo Chemical Company Limited and Sumitomo Aluminium Smelting Company, Ltd. His work in these organizations has been pivotal in driving research and development initiatives focused on alumina production processes.

Collaborations

Yoshihara's endeavors often involved collaboration with talented professionals, including his coworkers Koichi Yamada and Takahiro Ishida. These partnerships underline the spirit of teamwork in research and innovation, enabling breakthroughs that have a significant impact on the industry.

Conclusion

Masao Yoshihara's contributions to the field of alumina production through his patents and industry collaborations unmistakably position him as a pioneer in the field. His innovative approaches not only enhance production efficiency but also pave the way for future advancements in materials science, marking him as a remarkable inventor in contemporary engineering.

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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