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For the Inventor, By the Inventor

Tokyo, Japan

Atsufumi Shibayama

This inventor holds 41 USPTO granted patents and 14 published patent applications and 3 EPO patents, primarily in Signal Processing. Top assignees: Nec Corporation, Nec C Orporation. Active years: 2000-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Atsufumi Shibayama. Retrieved from https://idiyas.com/inventor/atsufumi-shibayama

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

Calculating rank
USPTO Granted Patents = 41 

% Patents Active = 68.3

 

Average Co-Inventor Count = 1.4

ph-index = 7

Forward Citations = 302(Granted Patents)


Company Filing History:

goldMedal39 out of 36,718 
 
Nec Corporation
 patents
silverMedal2 out of 196 
 
Nec C Orporation
 patents

Years Active: 2000-2026

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Areas of Expertise:
Signal Processing
Digital Filter
Semiconductor Circuit
Fast Fourier Transform
Clock Frequency Divider
Arithmetic Processing
Pipeline Control
Multi-Thread Execution
Program Parallelization
Memory Device
Digital Delay-Locked Loop
Domino Logic
41 patents (USPTO):Explore Patents
1. 12633928 - Clock signal frequency divider, processing system, processing device, and clock signal frequency dividing method (2026-05-19),
2. 12498753 - Processing device, processing system, and processing method (2025-12-16),
3. 12474859 - Digital filter device, operation method for digital filter device, and non-transitory computer-readable medium storing program (2025-11-18),
4. 12019700 - Signal processing apparatus, method, program, and recording medium (2024-06-25),
5. 11604852 - Signal processing apparatus, method, program, and recording medium (2023-03-14),
6. 11417144 - Processing apparatus, fingerprint image extraction processing apparatus, system, processing method, and computer readable medium (2022-08-16),
7. 10855255 - Digital filter, filter processing method, and recording medium (2020-12-01),
8. 10853445 - Digital filter device, digital filtering method, and program recording medium (2020-12-01),
9. 10374581 - Digital filter circuit, signal processing device, and digital filter processing method (2019-08-06),
10. 9952648 - Digital filtering device, digital filtering method, and storage media storing program (2018-04-24),
11. 9934199 - Digital filter device, digital filtering method, and storage medium having digital filter program stored thereon (2018-04-03),
12. 9880975 - Digital filter device, digital filter processing method, and storage medium having digital filter program stored thereon (2018-01-30),
13. 9785614 - Fast Fourier transform device, fast Fourier transform method, and recording medium storing fast Fourier transform program (2017-10-10),
14. 9571066 - Digital filter circuit, digital filter processing method and digital filter processing program storage medium (2017-02-14),
15. 9519457 - Arithmetic processing apparatus and an arithmetic processing method (2016-12-13),

Title: **Atsufumi Shibayama: Innovator in Signal Processing Technology**

Introduction

Atsufumi Shibayama, based in Tokyo, Japan, is a renowned innovator with an impressive portfolio of 38 patents. His work primarily focuses on advancements in signal processing technology, reflecting his commitment to pioneering solutions that enhance data representation and processing.

Latest Patents

Among his latest contributions, Shibayama has developed a series of patents related to signal processing apparatuses, methods, programs, and recording mediums. One notable invention includes a signal processing apparatus that features a storage processing part. This apparatus performs storage processing on data that is represented in a unique second representation format. In this format, when the data value is positive or zero, it aligns with the two's complement representation. Conversely, for negative values, the representation inverts all bits except for the most significant bit that indicates the sign. Another patent further distills this approach, emphasizing operation processing on data in two's complement format while still utilizing the innovative storage processing provided by the second representation format.

Career Highlights

Atsufumi Shibayama is currently employed at NEC Corporation, where he contributes to innovative research and development initiatives. His extensive work in signal processing has established him as a significant figure within the field, influencing modern techniques utilized in various technological applications.

Collaborations

Throughout his career, Shibayama has had the pleasure of collaborating with esteemed colleagues, including Satoshi Matsushita and Koichi Nose. Their collective efforts have undoubtedly fueled the advancement of technology in signal processing and have led to the successful development of various patents.

Conclusion

In summary, Atsufumi Shibayama stands out as a prominent inventor in the field of signal processing technology. With 38 patents to his name and ongoing collaborations with notable professionals, he continues to drive innovation at NEC Corporation, solidifying his legacy as a key contributor to advancements in data representation and processing methodologies.

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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