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For the Inventor, By the Inventor

Osaka, Japan

Takashi Ikeda

This inventor holds 74 USPTO granted patents and 12 published patent applications and 6 EPO patents, primarily in Projection Display Technology (CPC class G03B). Top assignees: Sanyo Electric Co., Ltd., Panasonic Intellectual Property Management Co., Ltd., Matsushita Electric Industrial Co., Ltd.. Active years: 1983-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takashi Ikeda. Retrieved from https://idiyas.com/inventor/takashi-ikeda-e6hh1w92

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

USPTO Granted Patents = 74 

% Patents Active = 67.6

 

Average Co-Inventor Count = 3.1

ph-index = 10

Forward Citations = 524(Granted Patents)

Forward Citations (Not Self Cited) = 518(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Takatsuki, JP (1983)
  • Suita, JP (1992)
  • Hirakata, JP (1993)
  • Niigata, JP (1999 - 2004)
  • Moriguchi, JP (2012)
  • Hagashi Osaka, JP (2013)
  • Higashiosaka, JP (1997 - 2014)
  • Osaka, JP (1983 - 2022)

Company Filing History:

goldMedal42 out of 8,782 
 
Sanyo Electric Co., Ltd.
 patents
silverMedal12 out of 13,338 
 
Panasonic Intellectual Property Management Co., Ltd.
 patents
bronzeMedal10 out of 27,375 
 
Matsushita Electric Industrial Co., Ltd.
 patents
4. 3 out of 655 
 
Matsushita Electronics Corporation
 patents
5. 2 out of 36,676 
 
Nec Corporation
 patents
6. 2 out of 11 
 
Ricoh Optical Industries Co., Ltd.
 patents
7. 2 out of 22 
 
Sanyo Electronic Co., Ltd.
 patents
8. 2 out of 4 
 
Vision3d Technologies, LLC
 patents
9. 1 out of 21 
 
Panasonic Projector & Display Corporation
 patents
10. 1 out of 158 
 
Sakai Chemical Industry Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1983-2026

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Areas of Expertise:
Phosphor Wheel
Light Source Device
Projection Display Apparatus
Illumination Device
Optical Element
Stereoscopic Display
Refractive Optics
Projection Optical System
Video Display
Lighting Equipment
Hand-held Projector
Phosphor Disc
74 patents (USPTO):Explore Patents
1. 12687771 - Phosphor wheel and projection image display device (2026-07-21),
2. 11513336 - Phosphor wheel device, light source device, and projection image display device (2022-11-29),
3. 11442348 - Wavelength conversion element, phosphor wheel, light source device, and projection display apparatus (2022-09-13),
4. 11126072 - Phosphor wheel including a light absorption processing body provided in a light processing region, light source device including the phosphor wheel, and projection display apparatus including the phosphor wheel (2021-09-21),
5. 10983333 - Light source device and projection display apparatus (2021-04-20),
6. 10921697 - Wavelength conversion element, phosphor wheel, light source device, and projection display apparatus (2021-02-16),
7. 10712646 - Phosphor wheel, light source device, and projection display apparatus (2020-07-14),
8. 10684539 - Lighting device and projection display apparatus (2020-06-16),
9. 10474019 - Phosphor disc, phosphor wheel, light source device, projection display apparatus, and manufacturing method of phosphor disc (2019-11-12),
10. 10394110 - Phosphor wheel module, light source device, and projection display apparatus (2019-08-27),
11. 10268111 - Phosphor wheel, light source device, and projector-type image display apparatus (2019-04-23),
12. 10162252 - Phosphor disc, phosphor wheel, light source device, projection display apparatus, and manufacturing method of phosphor disc (2018-12-25),
13. 9863604 - Phosphor wheel, light source device, and projection image display apparatus (2018-01-09),
14. 8878914 - Stereoscopic image display system and projection-type image display apparatus (2014-11-04),
15. 8684531 - Stereoscopic display device projecting parallax image and adjusting amount of parallax (2014-04-01),

Title: The Innovative Contributions of Takashi Ikeda

Introduction

Takashi Ikeda, an esteemed inventor based in Osaka, Japan, has made significant strides in the field of optical devices, holding an impressive 73 patents to his name. His work primarily revolves around enhancing projection technologies, demonstrating a commitment to innovation and excellence.

Latest Patents

Ikeda’s recent patents include the development of a phosphor wheel device, a light source device, and a projection image display device. The phosphor wheel device features a motor with a rotation shaft and a phosphor wheel substrate attached at one end, complemented by a balancer that incorporates at least one opening for improved functionality. Furthermore, his wavelength conversion element patent consists of a first and a second phosphor region, with the latter designed to include phosphor particles of varying sizes to enhance light emission efficiency.

Career Highlights

Throughout his career, Takashi Ikeda has been associated with notable companies such as Sanyo Electric Co., Ltd. and Panasonic Intellectual Property Management Co., Ltd. His experiences in these leading organizations have significantly influenced his inventive journey and shaped his contributions to optical technology.

Collaborations

In his professional endeavors, Ikeda has collaborated with accomplished individuals in the field, including coworkers Hideyuki Kanayama and Junji Kojima. Their collective expertise has fostered an environment of creativity and innovation, leading to the successful development of multiple groundbreaking technologies.

Conclusion

Takashi Ikeda’s legacy in the realm of optical devices is underscored by his substantial patent portfolio and impactful collaborations. His innovations not only push the boundaries of technology but also pave the way for future advancements in projection systems, ensuring his contributions will be recognized for years to come.

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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