Tsuyoshi Yoshida

This inventor holds 63 USPTO granted patents and 12 published patent applications, plus 1 CIPO patent and 31 EPO patents, primarily in Optical Communication (CPC class H04B). Top assignees: Mitsubishi Electric Corporation, Komatsu Corporation, Tokyo Yogyo Kabushiki Kaisha. Active years: 2002-2025.

USPTO Granted Patents = 63 (Patent Applications = 12)

% Patents Active = 81.0

CIPO Patents = 1

EPO Patents = 31 (Patent Applications = 37)

Average Co-Inventor Count = 2.4

ph-index = 7

Forward Citations = 166(Granted Patents)

Forward Citations (Not Self Cited) = 149(Dec 10, 2025)

Inventors with similar research interests:

Location History:

Katano, JP (2002 - 2006)
Gifu, JP (2003 - 2007)
Tajimi, JP (2007)
Osaka, JP (2005 - 2010)
Hirakata, JP (2003 - 2014)
Chiyoda-ku, JP (2015 - 2020)
Tokyo, JP (2011 - 2024)

Company Filing History:

33 out of 16,559

Mitsubishi Electric Corporation

Tokyo Yogyo Kabushiki Kaisha

Mitsubishi Electric Research Laboratories, Inc.

Yoshino Gypsum Co., Ltd.

where one patent can have more than one assignee

Years Active: 2002-2025

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Areas of Expertise:

Optical Distance Measurement

Error Correction Coding

Optical Transceiver

Transmission Code Processing

Optical Communication System

Signal Shaping Device

Spatial Optical Transmitter

Dummy-Light Generating Device

Likelihood Generation Circuit

Subchannel Encoding

Multilevel Modulation

Agricultural Tool

63 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12449537 - Optical distance measurement device (2025-10-21),

2. 12261624 - Error correction coding apparatus and error correction decoding apparatus (2025-03-25),

3. 12250023 - Optical space communications transmission and reception terminal and optical space communications system (2025-03-11),

4. 12224804 - Transmission code processing device, transmission code processing method, and optical transmitter (2025-02-11),

5. 11901913 - Error correction coding apparatus and error correction decoding apparatus (2024-02-13),

6. 11876554 - Optical transceiver, transmission signal determination method, and optical communication system (2024-01-16),

7. 11831433 - Error correction encoding device and method for reducing the number of bits to be protected by soft decision error correction (2023-11-28),

8. 11757557 - Subchannel encoding device, subchannel decoding device, subchannel encoding method, subchannel decoding method, and subchannel multiplexing optical communication system (2023-09-12),

9. 11752652 - Cutting apparatus, apparatus for manufacturing sheet material, and apparatus for manufacturing gypsum building material (2023-09-12),

10. 11736127 - Optical transmission device and likelihood generation circuit (2023-08-22),

11. 11695523 - Distribution shaping method, distribution deshaping method, distribution shaping encoder, distribution shaping decoder, and transmission system (2023-07-04),

12. 11606161 - Transmission/reception device and transmission/reception method (2023-03-14),

13. 11509421 - Distribution matching circuit, distribution dematching circuit, distribution matching method, distribution dematching method, and optical transmission system (2022-11-22),

14. 11496222 - Spatial optical transmitter and spatial optical communication system (2022-11-08),

15. 11271658 - Optical receiver, light signal receiving method, and data reproduction device (2022-03-08),

Title: **Innovations of Tsuyoshi Yoshida: A Leading Inventor in Optical Transmission**

Introduction

Tsuyoshi Yoshida is a prominent inventor based in Tokyo, Japan. With an impressive portfolio, he holds 56 patents that showcase his expertise in optical transmission technologies and error correction methods. His innovative contributions have significantly impacted the fields of telecommunications and data transmission.

Latest Patents

Among his latest patents are revolutionary inventions that include a "Transmission Code Processing Device" and a method for optimizing transmission code processing. This device features a signal point arrangement shaping encoding unit that ensures efficient conversion into a shaped bit format. Additionally, he has developed an error correction coding apparatus that enhances data reliability by using specific error correction code sequences for improved accuracy. His patents typically involve complex systems for modulation and multiplexing that are crucial for advanced communication systems.

Career Highlights

Throughout his career, Tsuyoshi Yoshida has significantly contributed to well-known companies like Mitsubishi Electric Corporation and Komatsu Corporation. His experience in these leading organizations has equipped him with a deep understanding of technological advancements in optical communications and error correction methodologies.

Collaborations

During his impressive career, Tsuyoshi has worked alongside noteworthy colleagues, including Teiji Yamamoto and Keisuke Matsuda. Together, they have explored innovative solutions that push the boundaries of technology in their respective fields, emphasizing collaboration and teamwork in driving forward new ideas and products.

Conclusion

Tsuyoshi Yoshida’s work is a testament to the role of inventors in shaping technological advancements. His patents reflect not only his innovative spirit but also the collaborative efforts of talented individuals in the industry. As the world moves towards more advanced communication technologies, Yoshida’s contributions will undoubtedly continue to influence the field for years to come.