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For the Inventor, By the Inventor

Kawasaki, Japan

Yasuyuki Oishi

This inventor holds 65 USPTO granted patents and 1 published patent application, plus 1 CIPO patent and 5 EPO patents, primarily in Distortion Compensation (CPC class 3752). Top assignees: Fujitsu Corporation, Fujitsu Frontech Limited, Fujitsu Limied. Active years: 1989-2015.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasuyuki Oishi. Retrieved from https://idiyas.com/inventor/yasuyuki-oishi

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

USPTO Granted Patents = 65 

% Patents Active = 63.1



Average Co-Inventor Count = 4.6

ph-index = 21

Forward Citations = 1,238(Granted Patents)

Forward Citations (Not Self Cited) = 1,209(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Kanagawa, JP (2002 - 2005)
  • Kawasaki, JP (1989 - 2013)
  • Shibuya, JP (2015)

Company Filing History:

goldMedal64 out of 39,378 
 
Fujitsu Corporation
 patents
silverMedal1 out of 273 
 
Fujitsu Frontech Limited
 patents
bronzeMedal1 out of 31 
 
Fujitsu Limied
 patents
4. 1 out of 4,948 
 
Ntt Docomo, Inc.
 patents
where one patent can have more than one assignee

Years Active: 1989-2015

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Areas of Expertise:
Distortion Compensating Apparatus
Wireless Communication
Adaptive Antenna
Power Amplifier
MIMO System
RFID Tag
Transmission Device
DC/DC Converter
Radio Transceiver
Multiplexing Circuit
Control Method
Distortion Correction
65 patents (USPTO):Explore Patents
1. 9143091 - Distortion compensating apparatus, transmitter, distortion compensating method, and transfer function calculating method (2015-09-22),
2. 8588711 - Transmission apparatus and distortion compensation method (2013-11-19),
3. 8508426 - Variable directional antenna (2013-08-13),
4. 8493144 - Distortion compensation device, radio communication device, and distortion compensation method (2013-07-23),
5. 8462052 - RFID tag and manufacturing method thereof (2013-06-11),
6. 8064844 - Wireless communication apparatus, power amplifier control method, and power amplifier control apparatus (2011-11-22),
7. 8022878 - RFID tag and manufacturing method thereof (2011-09-20),
8. 7973522 - DC/DC converter, and power amplifier applying the same (2011-07-05),
9. 7881404 - Distortion correction control apparatus and distortion correction control method (2011-02-01),
10. 7746957 - Distortion correction control apparatus and distortion correction control method (2010-06-29),
11. 7663436 - Power amplifier with distortion compensation circuit (2010-02-16),
12. 7639755 - Distortion compensating apparatus (2009-12-29),
13. 7551905 - Distortion compensation apparatus (2009-06-23),
14. 7551687 - Distortion compensating apparatus (2009-06-23),
15. 7519097 - Spread-signal multiplexing circuit (2009-04-14),

Title: Innovations by Yasuyuki Oishi: A Pioneer in Distortion Compensation Technology

Introduction

Yasuyuki Oishi, based in Kawasaki, Japan, is an accomplished inventor recognized for his significant contributions to the field of signal processing and amplifier technology. With an impressive portfolio of 65 patents, Yasuyuki has paved the way for advancements in distortion compensation methods and transmission apparatuses critical for improving signal quality.

Latest Patents

Among his latest innovations are patents for a distortion compensating apparatus, a transmitter, a distortion compensating method, and a transfer function calculating method. The distortion compensating apparatus introduces an advanced amplifier module, which utilizes a model comprising a first linear time-invariant filter to limit the bandwidth of an input signal. This module integrates an amplifier unit responsible for amplifying signals and a second filter to manage the output signal. A notable feature of this technology is the memoryless amplifier unit that retrieves output signals based on AM-to-AM and AM-to-PM distortion characteristics. Furthermore, it leverages a cross-correlation calculating unit to derive correlation estimates between the actual output signals and those calculated within the memoryless framework, allowing for an efficient distortion compensation process.

Additionally, his transmission apparatus patents elaborate on a novel system that incorporates an analog digital converter. This system samples and digitizes a demodulated signal, enhancing performance by addressing intermodulation distortion components through a sophisticated distortion compensation section.

Career Highlights

Yasuyuki Oishi has held positions at prominent companies, including Fujitsu Corporation and Fujitsu Limited. His roles in these organizations enabled him to push the boundaries of technologies that are essential in today’s telecommunications and broadcasting sectors.

Collaborations

During his career, Yasuyuki Oishi has worked alongside esteemed colleagues such as Kazuo Nagatani and Hajime Hamada. Together, they have contributed to meaningful innovations in their industry, fostering a collaborative environment that stimulates creativity and technical advancement.

Conclusion

Yasuyuki Oishi's impact as an inventor is marked by his dedication to enhancing signal processing and amplification technologies. With his extensive patent portfolio and collaborative spirit, he continues to influence the field and lay the groundwork for future innovations in distortion compensation and transmission systems. Yasuyuki's work remains a significant asset in advancing the capabilities of modern communication technologies.

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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