Hirokazu Fukaya

This inventor holds 14 USPTO granted patents. Top assignees: Nippon Electric Co., Ltd., Nec Corporation. Active years: 1976-1986.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hirokazu Fukaya. Retrieved from https://idiyas.com/inventor/hirokazu-fukaya

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

USPTO Granted Patents = 14

% Patents Active = 100.0

Average Co-Inventor Count = 1.4

ph-index = 6

Forward Citations = 124(Granted Patents)

Location History:

Tokyo, JA (1976 - 1977)
Tokyo, JP (1980 - 1986)

Company Filing History:

13 out of 1,038

Nippon Electric Co., Ltd.

Years Active: 1976-1986

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14 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 4596957 - Amplifier system switchable between two amplifying operations (1986-06-24),

2. 4552118 - Control circuit for controlling output pulse width using negative (1985-11-12),

3. 4509494 - Pulse width control circuit (1985-04-09),

4. 4494077 - Amplifier system switchable between two amplifying operations (1985-01-15),

5. 4469082 - Pulse width control circuit in which a feedback amount is varied (1984-09-04),

6. 4330757 - Semiconductor power amplification circuit (1982-05-18),

7. 4287390 - Power amplifier apparatus having over-current protection function (1981-09-01),

8. 4227127 - Motor speed control circuit having improved starting characteristics (1980-10-07),

9. 4054847 - Pulse oscillator circuit (1977-10-18),

10. 4001715 - Vertical deflection circuit for television receiver set (1977-01-04),

11. 3979605 - Integrating circuit for separating a wide pulse from a narrow pulse (1976-09-07),

12. 3969653 - Deflection circuit for television receiver set or the like (1976-07-13),

13. 3952213 - Delayed pulse generating circuit (1976-04-20),

14. 3950672 - Circuit for producing correctly timed vertical blanking pulses from a (1976-04-13),

Title: The Innovative Mind of Hirokazu Fukaya: Pioneering the Future of Amplifier Technology

Introduction: Hirokazu Fukaya, an accomplished inventor based in Tokyo, Japan, has made significant contributions to the field of amplifier technology. With a collection of 14 patents, Fukaya's work reflects his innovative spirit and dedication to advancing electronic systems. His inventions have not only pushed the boundaries of audio engineering but also enhanced the user experience in various applications.

Latest Patents: Among his latest inventions, Fukaya has developed an amplifier system switchable between two amplifying operations. This unique amplifier design includes first and second amplifying circuits, each with a non-inverting input, an inverting input, and an output. The design allows seamless switching between a dual-channel amplifier and a bridge-tied load (BTL) amplifier, demonstrating his expertise in versatile audio solutions. Another significant invention is a pulse width control circuit that utilizes a negative feedback signal to regulate output pulse width. This circuit features a detection mechanism that identifies when the pulse width is shorter than a set threshold, automatically adjusting the feedback signal to broaden the output pulse width. Both patents exemplify Fukaya's ability to address complex challenges in amplification technology effectively.

Career Highlights: Fukaya's impressive career includes significant roles at leading organizations, such as Nippon Electric Co., Ltd. and NEC Corporation. His experiences in these companies have provided him with a robust foundation for his inventive pursuits, enabling him to develop innovative solutions that meet industry needs.

Collaborations: Throughout his career, Fukaya has collaborated with skilled professionals, including Shigeo Nishitoba and Haruo Niki. These collaborations have fostered an environment of creativity and knowledge exchange, further enhancing the impact of his inventions.

Conclusion: Hirokazu Fukaya's contributions to amplifier technology highlight his role as a pioneer in the field. With a strong portfolio of patents and collaborative efforts with notable industry professionals, Fukaya continues to innovate and inspire, paving the way for future advancements in audio technology. His dedication to engineering excellence sets a benchmark for aspiring inventors in the ever-evolving landscape of electronic systems.

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]