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For the Inventor, By the Inventor

Hamamatsu, Japan

Toshifumi Kunimoto

This inventor holds 54 USPTO granted patents and 1 published patent application, primarily in Musical Tone Synthesis (CPC class 84DI). Top assignees: Yamaha Corporation, Nippon Gakki Seizo Kabushiki Kaisha, Yamaha Corportion. Active years: 1988-2022.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshifumi Kunimoto. Retrieved from https://idiyas.com/inventor/toshifumi-kunimoto

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

USPTO Granted Patents = 54 

% Patents Active = 92.6

Average Co-Inventor Count = 1.5

ph-index = 12

Forward Citations = 484(Granted Patents)

Forward Citations (Not Self Cited) = 437(Dec 10, 2025)


Inventors with similar research interests:


Company Filing History:

goldMedal51 out of 5,500 
 
Yamaha Corporation
 patents
silverMedal2 out of 841 
 
Nippon Gakki Seizo Kabushiki Kaisha
 patents
bronzeMedal1 out of 4 
 
Yamaha Corportion
 patents

Years Active: 1988-2022

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Areas of Expertise:
Musical Tone Synthesis
Signal Processing
Electronic Instruments
Waveform Generation
Tonal Characteristics
Reverberation Effects
Mixing Signal Processing
Digital Filters
Random Modulation
Non-Linear Conversion
Sound Synthesis
Music Apparatus
54 patents (USPTO):Explore Patents
1. 11252507 - Dynamics processing method and dynamics processing device (2022-02-15),
2. 10728663 - Method and apparatus for setting filter frequency response (2020-07-28),
3. 8467889 - Mixing signal processing apparatus and mixing signal processing integrated circuit (2013-06-18),
4. 8396578 - Mixing signal processing apparatus and mixing signal processing integrated circuit (2013-03-12),
5. 8389845 - Apparatus for generating musical tone signals based on mixing different decay waveform data (2013-03-05),
6. 8222508 - Tone signal creating apparatus and method (2012-07-17),
7. 8184829 - Signal processing device and method of processing signal (2012-05-22),
8. 5998724 - Tone synthesizing device and method capable of individually imparting (1999-12-07),
9. 5969284 - Music apparatus using boolean and numerical parameters settable by (1999-10-19),
10. 5841054 - Musical tone synthesizing apparatus having competibility of tone color (1998-11-24),
11. 5835605 - Engine exhaust sound synthesizer (1998-11-10),
12. 5739454 - Method and device for setting or selecting a tonal characteristic using (1998-04-14),
13. 5621801 - Reverberation effect imparting system (1997-04-15),
14. 5591930 - Electronic musical instrument performing multi-task processing (1997-01-07),
15. 5521325 - Device for synthesizing a musical tone employing random modulation of a (1996-05-28),

Title: Innovations and Contributions of Toshifumi Kunimoto

Introduction

Toshifumi Kunimoto is a prolific inventor based in Hamamatsu, Japan, known for his remarkable contributions to audio processing technologies. With a total of 54 patents to his name, Kunimoto's work reflects significant advancements in the field of sound dynamics and filter frequency response.

Latest Patents

Among his most recent innovations, two noteworthy patents stand out. The first is a dynamics processing method and device, which involves a process where an input audio signal is received, and its level is analyzed to determine if it exceeds a given threshold. The invention also details the methodology for changing the gain of the audio signal based on a specified time interval, enhancing audio clarity and performance.

His second patent focuses on a method and apparatus for setting filter frequency response. This invention subdivides a target frequency band into multiple partial bands, enabling operators to adjust and set frequency responses for specific bands according to operational parameters. This advanced technique plays a crucial role in fine-tuning sound quality in various applications.

Career Highlights

Toshifumi Kunimoto has had an illustrious career, primarily associated with renowned companies such as Yamaha Corporation and Nippon Gakki Seizo Kabushiki Kaisha. His tenure at these organizations has allowed him to develop and refine innovative technologies that have greatly influenced the audio industry.

Collaborations

Throughout his career, Kunimoto has collaborated with several distinguished professionals, notably Chifumi Takeuchi and Masahiro Kakishita. These partnerships have not only fostered innovation but have also contributed to the successful development of numerous audio technologies.

Conclusion

In summary, Toshifumi Kunimoto's impressive portfolio of patents and his collaborations with esteemed colleagues underline his significant impact on the field of audio technology. His innovative approaches to dynamics processing and filter frequency response continue to shape the way we experience sound today.

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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