Mitaka, Japan

Hiromasa Machida

This inventor holds 2 USPTO granted patents. Top assignee: Sony Corporation. Active years: 1976.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiromasa Machida. Retrieved from https://idiyas.com/inventor/hiromasa-machida

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 5.0

ph-index = 1

Forward Citations = 4(Granted Patents)


Company Filing History:


Years Active: 1976

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2 patents (USPTO):Explore Patents

Title: Hiromasa Machida: Innovator in Cathode Ray Tube Technology

Introduction

Hiromasa Machida is a notable inventor based in Mitaka, Japan. He has made significant contributions to the field of cathode ray tube technology, holding a total of 2 patents. His work focuses on systems that enhance the performance and accuracy of color cathode ray tubes.

Latest Patents

Machida's latest patents include a "System for beam landing correction in color cathode ray tube in the earth's magnetic field." This innovative system compensates for the mislanding of electron beams in a color cathode ray tube. It features a coil device in addition to a main deflection coil, a circuit that produces multiple currents with different waveforms, and a connecting device that selectively supplies these currents to the coil device based on the tube's orientation. This technology effectively addresses the challenges posed by the earth's magnetic field.

Another significant patent is the "Beam mislanding correcting system for color cathode ray tube." This system compensates for mislanding of electron beams due to thermal expansion within the tube. It employs electromagnetic devices to create magnetic fields that alter the paths of the electron beams. The system includes a circuit that adjusts the current supplied to these devices based on temperature variations, ensuring optimal performance regardless of environmental conditions.

Career Highlights

Hiromasa Machida is currently employed at Sony Corporation, where he continues to innovate in the field of display technology. His work has been instrumental in advancing the capabilities of cathode ray tubes, which have been widely used in various electronic devices.

Collaborations

Machida has collaborated with notable colleagues, including Mitsuyoshi Yamada and Masato Izumisawa. Their combined expertise has contributed to the development of cutting-edge technologies in the industry.

Conclusion

Hiromasa Machida's contributions to cathode ray tube technology exemplify the spirit of innovation. His patents reflect a deep understanding of the challenges in this field and a commitment to enhancing electronic display systems. His work continues to influence the industry and inspire future advancements.

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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