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For the Inventor, By the Inventor

Sakata, Japan

Hiroyuki Tomimatsu

This inventor holds 10 USPTO granted patents and 1 published patent application. Top assignee: Seiko Epson Corporation. Active years: 2004-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroyuki Tomimatsu. Retrieved from https://idiyas.com/inventor/hiroyuki-tomimatsu

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

USPTO Granted Patents = 10 

% Patents Active = 50.0

Average Co-Inventor Count = 1.3

ph-index = 4

Forward Citations = 44(Granted Patents)


Location History:

  • Sakata, JP (2004 - 2008)
  • Suwa, JP (2013 - 2015)

Company Filing History:

goldMedal10 out of 34,238 
 
Seiko Epson Corporation
 patents

Years Active: 2004-2026

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10 patents (USPTO):Explore Patents
1. 12528295 - Liquid ejection apparatus and control method for liquid ejection apparatus (2026-01-20),
2. 12397554 - Liquid ejection device and method for controlling liquid ejection device (2025-08-26),
3. 9050800 - Liquid ejecting head and liquid ejecting apparatus (2015-06-09),
4. 8550602 - Liquid ejecting head and liquid ejecting apparatus (2013-10-08),
5. 7314818 - Semiconductor device and method of manufacturing the same, circuit board, and electronic equipment (2008-01-01),
6. 7132738 - Semiconductor device having multiple semiconductor chips stacked in layers and method for manufacturing the same, circuit substrate and electronic apparatus (2006-11-07),
7. 7064425 - Semiconductor device circuit board, and electronic equipment (2006-06-20),
8. 6933172 - Semiconductor wafer with spacer and its manufacturing method, semiconductor device and its manufacturing method, and circuit substrate and electronic device (2005-08-23),
9. 6770511 - Semiconductor device, and its manufacturing method, circuit substrate, and electronic apparatus (2004-08-03),
10. 6727574 - Semiconductor device and method for manufacturing the same, circuit substrate and electronic apparatus (2004-04-27),

Title: Hiroyuki Tomimatsu: Innovator in Liquid Ejection Technology

Introduction

Hiroyuki Tomimatsu is a prominent inventor based in Sakata, Japan. He has made significant contributions to the field of liquid ejection technology, holding a total of 10 patents. His innovative work has been instrumental in advancing the capabilities of liquid ejection devices.

Latest Patents

Tomimatsu's latest patents include a liquid ejection device and a method for controlling such devices. This invention features a liquid ejection portion with multiple nozzles designed to eject different types of liquids. The control portion ensures effective cleaning of the nozzles, maintaining optimal performance. Another notable patent is for a liquid ejecting head that includes a pressure generation chamber and a vibrating wall, which enhances the efficiency of liquid ejection.

Career Highlights

Hiroyuki Tomimatsu is currently employed at Seiko Epson Corporation, where he continues to develop innovative technologies. His work has significantly impacted the industry, particularly in the realm of printing and liquid ejection systems.

Collaborations

Tomimatsu has collaborated with notable colleagues, including Takuya Takahashi and Hiroshi Ito. These partnerships have fostered a creative environment that has led to groundbreaking advancements in their field.

Conclusion

Hiroyuki Tomimatsu's contributions to liquid ejection technology exemplify his dedication to innovation. His patents and collaborations reflect a commitment to advancing technology in meaningful ways.

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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