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For the Inventor, By the Inventor

Shiojiri, Japan

Yoshihiro Mitsui

This inventor holds 10 USPTO granted patents. Top assignees: Kabushiki Kaisha Suwa Seikosha, Shinshu Seiki Kabushiki Kaisha, Epson Corporation. Active years: 1976-1983.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshihiro Mitsui. Retrieved from https://idiyas.com/inventor/yoshihiro-mitsui-kil2yd1f

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 = 100.0

Average Co-Inventor Count = 1.4

ph-index = 5

Forward Citations = 55(Granted Patents)


Location History:

  • Matsumoto, JA (1976)
  • Shiojiri, JP (1979 - 1983)

Company Filing History:

goldMedal8 out of 446 
 
Kabushiki Kaisha Suwa Seikosha
 patents
silverMedal7 out of 60 
 
Shinshu Seiki Kabushiki Kaisha
 patents
bronzeMedal1 out of 80 
 
Epson Corporation
 patents
4. 1 out of 1 
 
Shinshu Seiki Kabushiki Kaisha and Kabushiki Kaisha Suwa Seikosha
 patent
where one patent can have more than one assignee

Years Active: 1976-1983

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10 patents (USPTO):Explore Patents
1. 4417257 - Printing head for thermal printer (1983-11-22),
2. 4386565 - Printer apparatus using electromagnet (1983-06-07),
3. 4358776 - Thermal printer and improved platen (1982-11-09),
4. 4297697 - Power supply method for liquid crystal display (1981-10-27),
5. 4284002 - Character-selecting mechanism for a printer (1981-08-18),
6. 4258624 - Miniaturized printer (1981-03-31),
7. 4182240 - Printer control assembly (1980-01-08),
8. 4142463 - Print character selection mechanism (1979-03-06),
9. 3988652 - Stabilized brushless motor drive circuit (1976-10-26),
10. 3952219 - Compact motor (1976-04-20),

Title: Biography of Yoshihiro Mitsui

Introduction

Yoshihiro Mitsui is a prominent inventor based in Shiojiri, Japan. He has made significant contributions to the field of printing technology, holding a total of 10 patents. His innovative designs have advanced the functionality and efficiency of thermal printers.

Latest Patents

One of his latest patents is a printing head for thermal printers. This printing head features a substrate with an elongated smooth glaze layer, on which a plurality of heating elements are arranged in a vertical column. Electrodes on the substrate selectively activate these heating elements to create characters on thermosensitive recording paper. Another notable patent involves a printer apparatus that utilizes electromagnets. This printer, of the needle or hammer impact type, operates by releasing spring-stored energy to drive the printing member against a platen or character ring. A rotating cam restores the printing member to a locked standby condition after impact, while an electromagnet attracts a moveable core to facilitate the release of the printing member at designated times for printing.

Career Highlights

Throughout his career, Yoshihiro Mitsui has worked with several notable companies, including Kabushiki Kaisha Suwa Seikosha and Shinshu Seiki Kabushiki Kaisha. His work has been instrumental in developing advanced printing technologies that are widely used today.

Collaborations

Mitsui has collaborated with esteemed colleagues such as Taday

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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