Sodegaura, Japan

Toyokazu Handa

This inventor holds 3 USPTO granted patents. Top assignee: Idemitsu Kosan Company, Limited. Active years: 2001-2002.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toyokazu Handa. Retrieved from https://idiyas.com/inventor/toyokazu-handa

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 = 2.6

ph-index = 2

Forward Citations = 32(Granted Patents)


Company Filing History:


Years Active: 2001-2002

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3 patents (USPTO):Explore Patents

Title: Innovator Spotlight: Toyokazu Handa

Introduction: Toyokazu Handa, an esteemed inventor based in Sodegaura, Japan, has made significant contributions to the field of refrigeration technology. With a total of three patents to his name, Handa's innovations are focused primarily on enhancing the performance and efficiency of lubricants used in compression-type refrigerators.

Latest Patents: Among his latest patents, Handa has developed a lubricating oil composition specifically designed for refrigeration applications. This innovative composition includes a refrigerant consisting of C1-C8 hydrocarbons and a lubrication base oil with defined viscosity and non-aromatic-group unsaturation criteria. The result of this invention is a method for lubrication which significantly improves anti-abrasion qualities, enhances operational stability, and boosts refrigeration performance due to effective lubrication. Another notable patent involves a lubricating oil formulated for compression-type refrigerators that utilizes pentafluoroethane and incorporates a polyvinyl ether compound. This dual formulation not only augments lubrication efficiency but also complements the refrigeration process effectively.

Career Highlights: Handa's work primarily takes place at Idemitsu Kosan Company, Limited, where he dedicates his expertise to innovating lubricant formulations that cater to modern refrigeration demands. His career is distinguished by a focus on improving the operational capabilities and longevity of refrigeration systems through tailored lubrication solutions.

Collaborations: Throughout his innovative journey, Toyokazu Handa has collaborated with skilled professionals such as Satoshi Nagao and Tatsuya Egawa. Their combined efforts are instrumental in advancing the development of cutting-edge solutions in refrigeration lubricant technology.

Conclusion: Toyokazu Handa exemplifies the spirit of innovation in the realm of refrigeration technology. His patents reflect a commitment to enhancing both performance and efficiency in essential industrial applications. Through his work at Idemitsu Kosan Company, Limited, and valuable collaborations, Handa continues to impact the future of refrigeration lubricants significantly.

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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