Toyohiko Kumakura, an accomplished inventor based in Ibaraki, Japan, has made significant contributions to the field of electronics. With a total of four patents to his name, Kumakura's work focuses on enhancing the performance and efficiency of semiconductor devices and related electronic components.

Latest Patents

Kumakura's portfolio includes several groundbreaking patents that illustrate his innovative approach. His latest inventions consist of a wiring board that features a predetermined wiring section on an insulation board, complemented by an electromagnetic shielding film positioned close to the wiring section. Additionally, he developed a semiconductor device designed with an electromagnetic shielding film on the surface where the integrated circuit is formed. This device incorporates leads connected to the semiconductor chip’s external terminal, all sealed with a dedicated sealing material.

Moreover, Kumakura has designed a circuit board that consists of a network of leads formed on an insulating material. This board is engineered to reduce the self-inductance of the leads by enabling eddy currents through a conductor, thus enhancing performance. His work aims to minimize noise interference on semiconductor device driving voltages and to standardize transmission distances between signal lines, particularly in microprocessor units and other electronic devices.

Career Highlights

Kumakura's career is closely associated with Hitachi Cable, Inc., where he has applied his expertise to develop solutions that address critical challenges in semiconductor technology. His innovative inventions showcase his commitment to advancing electronic engineering and improving the reliability of complex systems.

Collaborations

Throughout his career, Kumakura has collaborated with notable colleagues, including Gen Murakami and Tomo Yasuda. Together, they have pushed the boundaries of semiconductor research and development, working on projects that continue to influence the electronics industry.

Conclusion

Toyohiko Kumakura stands out as a key figure in the innovation landscape of semiconductor technology. His four patents reflect a dedication to enhancing electronic devices through sophisticated design and engineering. As a valued member of Hitachi Cable, Inc., his work continues to impact the field significantly, paving the way for future advancements in electronics.

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