Kawasaki, Japan

Masao Nakahara

This inventor holds 10 USPTO granted patents. Top assignees: Mitutoyo Mfg. Co., Ltd., Kabushiki Kaisha Mitutoyo Seisakusho. Active years: 1979-1984.

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

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 = 4

Forward Citations = 55(Granted Patents)


Company Filing History:


Years Active: 1979-1984

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10 patents (USPTO):Explore Patents

Title: The Innovative Mind of Masao Nakahara

Introduction

Masao Nakahara, an esteemed inventor based in Kawasaki, Japan, has made significant contributions to the field of precision measurement tools. With a remarkable portfolio of 10 patents, Nakahara's work exemplifies a commitment to enhancing measurement accuracy and efficiency in various applications.

Latest Patents

Among his recent innovations are the Micrometer Gauge and the Cylinder Gauge. The Micrometer Gauge features a spindle driving mechanism that incorporates a spiral groove with a large pitch, enabling effective spindle transfer and engagement with the groove. It includes a rotation-preventing device and utilizes the axial movement of the spindle to drive an indicator, providing precise measurements.

The Cylinder Gauge, on the other hand, is designed for comparing and measuring the diameter of holes in workpieces. This device comprises a spindle with a head that supports it, along with a measuring element that can move linearly in relation to the spindle's radial direction. It is equipped with two springs that assist in biasing the measuring element and guide member to facilitate the measurement of even shallow holes accurately.

Career Highlights

Throughout his career, Nakahara has been associated with reputable companies such as Mitutoyo Manufacturing Co., Ltd. and Kabushiki Kaisha Mitutoyo Seisakusho. His work in these institutions has allowed him to collaborate on numerous innovative projects, further enhancing his expertise in the measurement technology sector.

Collaborations

Nakahara has had the opportunity to work alongside notable colleagues in his field, including Ichiro Mizuno and Hideo Sakata. Their collaborative efforts have undoubtedly played a role in advancing the technology of measurement tools, reinforcing the importance of teamwork in innovation.

Conclusion

Masao Nakahara's dedication to precision and innovative design is reflected in his patents and his collaboration with prominent companies and individuals. His inventions, such as the Micrometer Gauge and Cylinder Gauge, are significant contributions to the field of metrology, demonstrating not only his ingenuity but also his impact on the industry's evolution. As he continues to innovate, Nakahara remains a noteworthy figure in the realm of measurement technology.

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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