Hiroshi Kato

This inventor holds 118 USPTO granted patents and 11 published patent applications and 11 EPO patents, primarily in Optical Devices (CPC class F16H1-538). Top assignees: Seiko Epson Corporation, Nsk Corporation, Sony Corporation. Active years: 1985-2026.

USPTO Granted Patents = 118 (Patent Applications = 11)

% Patents Active = 71.2

EPO Patents = 11 (Patent Applications = 4)

Average Co-Inventor Count = 2.9

ph-index = 14

Forward Citations = 858(Granted Patents)

Forward Citations (Not Self Cited) = 791(Dec 10, 2025)

Inventors with similar research interests:

Takashi Imanishi

Location History:

Shinagawa, JP (1988)
Nagoyo, JP (1989)
Samukawa, JP (1990)
Nagoya, JP (1988 - 1991)
Fujisawa, JP (2000 - 2002)
Dkaya, JP (2003)
Nagano-ken, JP (2003 - 2005)
Nagano, JP (2007)
Suwa, JP (2003 - 2010)
Okuya, JP (2011)
Shiojiri, JP (2009 - 2013)
Yokohama, JP (1990 - 2016)
Kawasaki, JP (1985 - 2020)
Okaya, JP (2001 - 2022)
Kanagawa, JP (1985 - 2023)

Company Filing History:

52 out of 34,209

Seiko Epson Corporation

Sony Ericsson Mobile Communications Japan, Inc.

patents

5. 7 out of 249

Fujitsu Optical Components Limited

patents

6. 4 out of 30

Narumi China Corporation

Canon Kabushiki Kaisha

patents

10. 2 out of 2,389

Fujifilm Business Innovation Corp.

patents

11. 2 out of 7,649

Renesas Electronics Corporation

patents

12. 2 out of 42

Sony Mobile Communications Japan, Inc.

Nippon Oil Corporation

Sony Mobile Communications Inc.

patents

17. 1 out of 3,276

Sony Semiconductor Solutions Corporation

patents

18. 1 out of 556

Unisia Jecs Corporation

patents

where one patent can have more than one assignee

Years Active: 1985-2026

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Areas of Expertise:

Optical Modulator

Liquid Ejecting Head

Piezoelectric Device

Power Transmission Control

Image Forming Apparatus

Noncontact Charging

Solid-State Imaging

Contactless Power Transfer

118 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12707745 - Photodetection device and electronic apparatus (2026-08-11),

2. 12697824 - Heating apparatus, image forming apparatus, and liquid discharge apparatus (2026-08-04),

3. 12671574 - Communication apparatus, communication method, and storage medium (2026-06-30),

4. 11649131 - Post-processing apparatus (2023-05-16),

5. 11535034 - Piezoelectric element and liquid ejecting head including piezoelectric layer having improved lattice ratio (2022-12-27),

6. 11097919 - Recording material processing apparatus and image forming system (2021-08-24),

7. 10611152 - Liquid ejecting head, liquid ejecting apparatus, and piezoelectric device (2020-04-07),

8. 10611150 - Liquid discharge head, liquid discharge apparatus, piezoelectric device, and ultrasonic sensor (2020-04-07),

9. 10578885 - Polarization coupling device and optical modulation device (2020-03-03),

10. 10393970 - Optical module (2019-08-27),

11. 10278007 - Information providing system and information providing method (2019-04-30),

12. 9864147 - Optical modulator module (2018-01-09),

13. 9749785 - Information providing system and information providing method (2017-08-29),

14. 9638927 - Polarization combiner and optical modulation device (2017-05-02),

15. 9638861 - Optical transmitter (2017-05-02),

Title: The Innovative Journey of Inventor Hiroshi Kato

Introduction:

Hiroshi Kato, a visionary inventor hailing from Kanagawa, Japan, has made significant contributions to the world of technology and innovation through his groundbreaking inventions.

Latest Patents:

Hiroshi Kato's latest patents focus on advancements in renewable energy technologies, particularly in the field of solar power generation and energy storage solutions.

Career Highlights:

With a career spanning over two decades, Hiroshi Kato has been at the forefront of developing cutting-edge technologies in the renewable energy sector. His work has not only revolutionized the way we harness energy but has also paved the way for a more sustainable future.

Collaborations:

Throughout his career, Hiroshi Kato has collaborated with leading research institutions, universities, and tech companies to further his research and bring his inventions to life. His collaborative efforts have led to the successful commercialization of several innovative products.

Conclusion:

Inventor Hiroshi Kato's relentless pursuit of innovation and sustainability has solidified his position as a trailblazer in the field of renewable energy. His passion for creating a greener world through technology continues to inspire generations of inventors and researchers worldwide.