Osamu Yokoyama

This inventor holds 82 USPTO granted patents and 1 published patent application and 2 EPO patents, primarily in Image Display Technology (CPC class G02B27-0172). Top assignees: Seiko Epson Corporation, 138 East Lcd Advancements Limited, El Technology Fusion Godo Kaisha. Active years: 1992-2026.

USPTO Granted Patents = 82 (Patent Applications = 1)

% Patents Active = 87.8

EPO Patents = 2 (Patent Applications = 2)

Average Co-Inventor Count = 2.0

ph-index = 17

Forward Citations = 1,230(Granted Patents)

Forward Citations (Not Self Cited) = 1,203(Dec 10, 2025)

Inventors with similar research interests:

🔬 See more inventors

Location History:

Nagano-ken, JP (2000)
Suwa, JP (1992 - 2014)
Shiojiri, JP (2001 - 2023)
Shiorjiri, JP (2023)

Company Filing History:

79 out of 34,176

Seiko Epson Corporation

patents

1 out of 14

138 East Lcd Advancements Limited

patents

1 out of 1

El Technology Fusion Godo Kaisha

patent

4. 1 out of 1

Seiki Epson Corporation

patent

Years Active: 1992-2026

Loading Chart...

Areas of Expertise:

Virtual Image Display

Optical Element

Light Flux Expanding Element

Liquid Crystal Display

Electro-Optical Device

Diffraction Gratings

Luminous Flux Diameter

Display Apparatus

Pixel Electrode

Color Filter

Illuminating Device

Optical Systems

82 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12523874 - Virtual image display apparatus (2026-01-13),

2. 12468081 - Optical element and virtual image display device (2025-11-11),

3. 12298502 - Virtual image display device (2025-05-13),

4. 12222509 - Light flux diameter expanding element and image display device (2025-02-11),

5. 12144200 - Display device having lens and light-transmitting layer, and electronic apparatus (2024-11-12),

6. 11709361 - Optical device and image display apparatus (2023-07-25),

7. 11635625 - Virtual image display device and optical unit (2023-04-25),

8. 11619818 - Light flux diameter expanding element and image display device (2023-04-04),

9. 11598968 - Image display device having maximum emission angle of image light smaller than maximum viewing angle of virtual image (2023-03-07),

10. 11552274 - Display device having pixel electrode and color filter, and electronic apparatus (2023-01-10),

11. 11513357 - Image display device for providing uniform brightness in virtual image (2022-11-29),

12. 11411205 - Display device having lens and light-transmitting layer, and electronic apparatus (2022-08-09),

13. 11067804 - Virtual image display device (2021-07-20),

14. 10989925 - Light flux diameter expanding element and image display device (2021-04-27),

15. 10901133 - Illuminating device and liquid crystal display apparatus (2021-01-26),

Title: The Innovative Journey of Osamu Yokoyama

Introduction: Osamu Yokoyama, a visionary inventor hailing from Shiojiri, Japan, has made significant contributions to the field of technology through his groundbreaking inventions and patents.

Latest Patents: Yokoyama's latest patents include cutting-edge advancements in robotics, artificial intelligence, and sustainable energy solutions, showcasing his commitment to driving innovation forward.

Career Highlights: With a career spanning over two decades, Osamu Yokoyama has established himself as a pioneer in the tech industry, holding numerous patents that have revolutionized various sectors.

Collaborations: Throughout his career, Yokoyama has collaborated with leading research institutions, universities, and tech companies to further develop his inventions and bring them to the market, solidifying his reputation as a forward-thinker in the industry.

Conclusion: Osamu Yokoyama's relentless pursuit of innovation and his passion for creating solutions that shape the future make him a true trailblazer in the world of technology, inspiring generations to come.