Takeo Yasuda

This inventor holds 17 USPTO granted patents, primarily in Fluorescent Lighting. Top assignees: Toshiba Lighting & Technology Corporation, Ajinomoto Co., Ltd.. Active years: 1981-2014.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takeo Yasuda. Retrieved from https://idiyas.com/inventor/takeo-yasuda-nv93521k

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

USPTO Granted Patents = 17

% Patents Active = 52.9

Average Co-Inventor Count = 3.3

ph-index = 8

Forward Citations = 129(Granted Patents)

Location History:

Yokohama, JP (1981 - 2006)
Kanagawa-ken, JP (1997 - 2007)
Yokosuka, JP (2014)

Company Filing History:

14 out of 663

Toshiba Lighting & Technology Corporation

Years Active: 1981-2014

Loading Chart...

Areas of Expertise:

Compact Fluorescent Lamp

Self-Ballasted Fluorescent Lamp

Illumination Device

Luminous Flux

Lamp Efficiency

Power Requirements

Fluorescent Lamp Unit

Lighting Apparatus

Intermediate Electrode

Tube Geometry

Sealed End

17 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 8882305 - Bulb-type lamp and luminaire (2014-11-11),

2. 7268494 - Compact fluorescent lamp and luminaire using the same (2007-09-11),

3. 7067981 - Compact fluorescent lamp, self-ballasted fluorescent lamp and luminaire (2006-06-27),

4. 7053554 - Bulb-shaped fluorescent lamp and illumination device (2006-05-30),

5. 7042158 - Compact fluorescent lamp, self-ballasted fluorescent lamp and luminaire (2006-05-09),

6. 6956327 - Compact fluorescent lamp, self-ballasted fluorescent lamp and luminaire (2005-10-18),

7. 6794801 - Compact selfballasted fluorescent lamp and luminaire (2004-09-21),

8. 6781315 - Compact fluorescent lamp, self-ballasted fluorescent lamp and luminaire (2004-08-24),

9. 6437502 - Selfballasted fluorescent lamp having specified tube geometry, luminous flux, lamp efficiency and power requirements (2002-08-20),

10. 6417615 - Fluorescent lamp with auxiliary amalgam secured to single lead wire (2002-07-09),

11. 5828170 - Fluorescent lamp unit and lighting apparatus having the fluorescent lamp (1998-10-27),

12. 5629586 - Compact fluorescent lamp unit having first and second sealed end (1997-05-13),

13. 5252890 - Compact type fluorescent lamp device having crooked arc path (1993-10-12),

14. 5138223 - Tubular fluorescent lamp with intermediate electrode (1992-08-11),

15. 4384936 - System for determining the concentration of an L-amino acid in (1983-05-24),

Title: Takeo Yasuda: Innovator in Lighting Technology

Introduction

Takeo Yasuda is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of lighting technology, holding a total of 17 patents. His innovative designs have paved the way for advancements in both bulb-type lamps and compact fluorescent lamps.

Latest Patents

Among his latest patents, Yasuda has developed a bulb-type lamp and luminaire. This invention features a globe with a constricted part, where one end is set to a minimum diameter and the other to a maximum diameter. The design allows for an increase in diameter from one end to the other, creating a unique light source that includes a semiconductor light-emitting element. Another notable patent is for a compact fluorescent lamp, which comprises a helical fluorescent tube with a pair of tube ends equipped with discharge electrodes. This design is supported by a holder and includes a lighting device that supplies high-frequency power to the fluorescent tube.

Career Highlights

Yasuda has worked with notable companies such as Toshiba Lighting & Technology Corporation and Ajinomoto Co., Ltd. His experience in these organizations has contributed to his expertise in lighting solutions and innovation.

Collaborations

Throughout his career, Yasuda has collaborated with talented individuals, including Kiyoshi Nishio and Toshiya Tanaka. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Takeo Yasuda's contributions to lighting technology exemplify his innovative spirit and dedication to improving everyday products. His patents reflect a commitment to advancing the field and enhancing the efficiency of lighting solutions.

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]