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For the Inventor, By the Inventor

Shiojiri, Japan

Kenji Hatada

This inventor holds 23 USPTO granted patents, primarily in Printing Technology. Top assignee: Seiko Epson Corporation. Active years: 2006-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kenji Hatada. Retrieved from https://idiyas.com/inventor/kenji-hatada

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

USPTO Granted Patents = 23

% Patents Active = 39.1

Average Co-Inventor Count = 2.0

ph-index = 4

Forward Citations = 45(Granted Patents)


Location History:

  • Nagano-ken, JP (2006)
  • Nagano, JP (2014 - 2015)
  • Shiojiri, JP (2010 - 2019)

Company Filing History:

goldMedal23 out of 34,268 
 
Seiko Epson Corporation
 patents

Years Active: 2006-2026

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Areas of Expertise:
Printing Apparatus
Motor Control Device
Fluid Ejection Device
Medium Feeding Apparatus
Roll-Shaped Medium Transport
Color Measurement Device
Recording Apparatus
Printing Method
Emission Intensity Adjusting
Threshold Value Calculation
Correction Value Calculation
Ink-Jet Printer
23 patents (USPTO):Explore Patents
1. 12612279 - Printing apparatus and conveyance control method (2026-04-28),
2. 12252364 - Printing apparatus and conveyance control method (2025-03-18),
3. 10364116 - Medium feeding apparatus and control method for medium feeding apparatus (2019-07-30),
4. 9758332 - Roll-shaped medium transport device, roll-shaped medium transport method, and printing apparatus (2017-09-12),
5. 9242487 - Printing apparatus (2016-01-26),
6. 9199492 - Motor control device, fluid ejection device, and motor control method (2015-12-01),
7. 9056503 - Recording apparatus (2015-06-16),
8. 8936339 - Recording apparatus and recording medium conveyance method (2015-01-20),
9. 8872877 - Motor control device, fluid ejection device, and motor control method (2014-10-28),
10. 8864059 - Printing device and roll diameter calculating method and program (2014-10-21),
11. 8801137 - Recording apparatus (2014-08-12),
12. 8708445 - Printing device, printing method, and program (2014-04-29),
13. 8687176 - Color measurement device and color measurement method (2014-04-01),
14. 8419154 - Motor control device, fluid ejection device, and motor control method (2013-04-16),
15. 8328318 - Printing method and printing apparatus (2012-12-11),

Title: Innovations and Contributions of Kenji Hatada

Introduction

Kenji Hatada is a remarkable inventor based in Shiojiri, Japan, known for his significant contributions to the field of medium feeding apparatus technology. With an impressive total of 21 patents to his name, Hatada has developed numerous innovative systems that enhance the efficiency and functionality of printing operations.

Latest Patents

Two of Kenji Hatada's latest patents reflect his ingenuity and focus on improving medium feeding technologies. The first patent discusses a medium feeding apparatus that features a feeding roller designed to assist in the delivery of printing mediums. This apparatus includes critical components such as a roll holding portion, an intermediate roller for pulling out the printing medium, and a sophisticated controller that calculates the roll diameter based on rotation amounts detected by various sensors.

The second patent introduces a roll-shaped medium transport device that includes a medium supply unit designed for unwinding and supplying a roll-shaped medium. It effectively manages the transport operation through a rotation detecting unit and a determination unit that identifies any transport anomalies in real-time. These innovations underscore Hatada's commitment to advancing the printing technology landscape.

Career Highlights

Kenji Hatada is currently employed at Seiko Epson Corporation, where he continues to pioneer new technologies in printing and medium feeding systems. His extensive experience and innovative mindset have solidified his role as a key contributor within the company.

Collaborations

Throughout his career, Hatada has collaborated with talented peers, including notable coworkers Hitoshi Igarashi and Ryo Hamano. These partnerships have facilitated the exchange of ideas and fostered a creative environment that drives innovation within Seiko Epson Corporation.

Conclusion

Kenji Hatada's unwavering dedication to innovation in medium feeding technology positions him as an influential figure in the industry. His array of patents, recent advancements, and collaborative spirit significantly contribute to the ongoing evolution of printing systems, ensuring that his work leaves a lasting impact on the field.

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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