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Sieko Epson Corporation

USPTO Granted Patents = 14

% Expired Patents = 35.7

Forward Citations = 56

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26 inventors (with patents filed for the assignee):

Taku Ishizawa (1 out of 198 patents)

Akiko Matsuzaki (1 out of 23 patents)

Atsushi Yoshida (1 out of 30 patents)

4. Tokito Yamaguchi (1 out of 40 patents)

5. Takashi Takeda (1 out of 205 patents)

6. Norio Nakamura (1 out of 26 patents)

7. Shuichi Koganehira (1 out of 66 patents)

8. Toshiaki Miyao (1 out of 107 patents)

9. Akira Komatsu (1 out of 107 patents)

10. Masayuki Takagi (1 out of 122 patents)

11. Yasushi Mizoguchi (1 out of 90 patents)

12. Hitoshi Matsumoto (1 out of 109 patents)

13. Mitsuto Yanagisawa (1 out of 8 patents)

14. Osami Yamada (1 out of 2 patents)

15. Osamu Urano (1 out of 21 patents)

14 patents: Sort by Forward Citations

1. 10696860 - Reaction liquid and recording method (2020-06-30),

2. 10627644 - Virtual image display device (2020-04-21),

3. 9729095 - Stepping motor control circuit, semiconductor device, and analog electronic timepiece (2017-08-08),

4. 8181191 - Media processing device and control method for a media processing device (2012-05-15),

5. D653950 - Packaging container (2012-02-14),

6. 8094356 - Light scanning device and image forming device (2012-01-10),

7. 7914128 - Liquid ejecting head, piezoelectric element, and liquid ejecting apparatus (2011-03-29),

8. 7503968 - Black ink composition, and recording method and recorded article using the same (2009-03-17),

9. 7461133 - System of automatically fetching contents present on network (2008-12-02),

10. 7284818 - Liquid injection apparatus (2007-10-23),

11. 7235885 - Semiconductor device and method of manufacturing the same, circuit board and electronic device (2007-06-26),

12. 6040918 - Copying machine (2000-03-21),

13. 5455642 - Progressive power lens (1995-10-03),

14. 4833098 - Polycrystalline semiconductor deposition in groove for device insolation (1989-05-23),

Company Overview

Seiko Epson Corporation, headquartered in Japan, is a global leader in imaging and printing technologies. The company specializes in the development and manufacturing of printers, projectors, and industrial automation equipment, with a strong emphasis on innovation in precision technology. Epson is also engaged in various research domains, including microdevices and wearable technology, contributing to advancements in smart devices and sustainable solutions. Its commitment to environmental sustainability is evident in its product design and operational practices.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

14 Patents

#67 in

#3,577 in Japan

#42,199 in the World

Sieko Epson Corporation

Forward Citations = 56

26 inventors:

Taku Ishizawa (1 out of 198 patents)

Akiko Matsuzaki (1 out of 23 patents)

Atsushi Yoshida (1 out of 30 patents)

4. Tokito Yamaguchi (1 out of 40 patents)

5. Takashi Takeda (1 out of 205 patents)

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

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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