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Epson Toyocom Corporation

USPTO Granted Patents = 100

% Expired Patents = 71.0

EPO Patents = 3

Forward Citations = 506

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102 inventors (with patents filed for the assignee):

Masayuki Oto (8 out of 17 patents)

Akitoshi Hara (5 out of 14 patents)

Hisao Motoyama (5 out of 10 patents)

4. Atsushi Kiyohara (4 out of 11 patents)

5. Takuya Owaki (4 out of 18 patents)

6. Kenji Sato (4 out of 16 patents)

7. Jun Watanabe (4 out of 17 patents)

8. Katsuo Ishikawa (4 out of 8 patents)

9. Takao Morita (4 out of 5 patents)

10. Hideo Tanaya (4 out of 28 patents)

11. Yukihiro Tonegawa (4 out of 4 patents)

12. Kazuhiko Shimodaira (3 out of 19 patents)

13. Takehiro Yamamoto (3 out of 33 patents)

14. Yugo Koyama (3 out of 14 patents)

15. Hideto Naruse (3 out of 5 patents)

Core Competencies:

Piezoelectric Resonator

Surface Acoustic Wave Device

Pressure Sensor

Oscillator

Flexural Vibration Piece

Atomic Oscillator

Temperature Sensor Circuit

Acceleration Sensor

Laminated Half-Wave Plate

Voltage Controlled Oscillator

Gyro Sensor Module

Optical Pickup Device

100 patents: Sort by Forward Citations

1. 8375790 - Physical quantity detection apparatus, method of controlling physical quantity detection apparatus, abnormality diagnosis system, and abnormality diagnosis method (2013-02-19),

2. 8362854 - Flexural vibration piece and oscillator using the same (2013-01-29),

3. 8080921 - Reduced-height piezoelectric device having a piezoelectric resonator and electronic component (2011-12-20),

4. 8031401 - Laminated half-wave plate, polarizing converter, polarized light illumination device and light pickup device (2011-10-04),

5. 8026652 - Quartz crystal resonator element, quartz crystal device, and method for producing quartz crystal resonator element (2011-09-27),

6. 8018127 - Flexural resonator element and flexural resonator for reducing energy loss due to heat dissipation (2011-09-13),

7. 8018122 - Surface acoustic wave device, module device, oscillation circuit, and method for manufacturing surface acoustic wave device (2011-09-13),

8. 8015881 - Pressure sensor (2011-09-13),

9. 8011252 - Pressure sensor (2011-09-06),

10. 8000208 - Laminated wave plate and optical pickup device using the same (2011-08-16),

11. 7999626 - Physical section of atomic oscillator (2011-08-16),

12. 7995276 - Laminated half-wave plate, polarizing converter, polarized light illumination device and light pickup device (2011-08-09),

13. 7990616 - IR-UV cut multilayer filter with dust repellent property (2011-08-02),

14. 7990027 - Piezoelectric device and method for manufacturing piezoelectric device (2011-08-02),

15. 7986608 - Laminated wave plate and optical pickup device using the same (2011-07-26),

Company Overview

Epson Toyocom Corporation, headquartered in Tokyo, Japan, specializes in the development and manufacturing of advanced piezoelectric devices. The company focuses on a range of core technologies including piezoelectric resonators, surface acoustic wave devices, and various sensors such as pressure, temperature, and acceleration sensors. With a commitment to innovation, Epson Toyocom plays a crucial role in enhancing the performance and reliability of electronic systems across diverse applications, contributing to advancements in telecommunications, automotive, and consumer electronics.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

100 Patents

#541 in Tokyo

#1,121 in Japan

#7,778 in the World

Epson Toyocom Corporation

Forward Citations = 506

102 inventors:

Masayuki Oto (8 out of 17 patents)

Akitoshi Hara (5 out of 14 patents)

Hisao Motoyama (5 out of 10 patents)

4. Atsushi Kiyohara (4 out of 11 patents)

5. Takuya Owaki (4 out of 18 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Epson Toyocom Corporation. Retrieved from https://idiyas.com/company/epson-toyocom

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

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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