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For the Inventor, By the Inventor

Tokorozawa, Japan

Michio Koizumi

This inventor holds 10 USPTO granted patents. Top assignee: Citizen Watch Company, Ltd.. Active years: 1980-1992.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Michio Koizumi. Retrieved from https://idiyas.com/inventor/michio-koizumi

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 = 4.0

ph-index = 3

Forward Citations = 24(Granted Patents)


Location History:

  • Saitama, JP (1985 - 1989)
  • Tokorozawa, JP (1980 - 1992)

Company Filing History:

goldMedal10 out of 2,004 
 
Citizen Watch Company, Ltd.
 patents

Years Active: 1980-1992

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10 patents (USPTO):Explore Patents
1. 5141345 - Sheet discharge apparatus for printer (1992-08-25),
2. 5040912 - Printer having a top cover with an access shutter (1991-08-20),
3. 4952087 - Printer for use with continuous form (1990-08-28),
4. 4852480 - Dot line printer with individually replaceable printing head (1989-08-01),
5. 4757760 - Wire mask for a dot printer head apparatus (1988-07-19),
6. D281080 - Base frame for dot printer (1985-10-22),
7. D281079 - Frame for printing head (1985-10-22),
8. D281078 - Holder for printing head frame (1985-10-22),
9. 4527921 - Paper feed apparatus for shuttle printer (1985-07-09),
10. 4188135 - Multiple inked ribbon color changeover mechanism for printing machine (1980-02-12),

Title: Michio Koizumi: Innovator in Printer Technology

Introduction

Michio Koizumi is a prominent inventor based in Tokorozawa, Japan. He has made significant contributions to the field of printer technology, holding a total of 10 patents. His innovative designs have improved the functionality and efficiency of printers, making them more user-friendly.

Latest Patents

Among his latest patents is a "Sheet discharge apparatus for printer." This invention features a platen and a first discharge roller unit that is movable toward and away from the platen. It defines a first sheet insertion passage located between the platen and the first discharge roller unit. Additionally, it includes an openable and closable top cover and a second discharge roller unit that can move longitudinally in parallel with the top cover. This design allows for a second sheet insertion passage between the two discharge roller units, along with positioning means for the second discharge roller unit on the printer body.

Another notable patent is for a "Printer having a top cover with an access shutter." This invention allows a recording medium to be fed into and drawn out of the printer body through a rear opening. The top cover assembly includes a top cover and a shutter that can be moved between an open position, which permits access to the printer's interior, and a closed position, which prohibits access. The design ensures that the recording medium can be easily managed through an upper opening in the top cover.

Career Highlights

Koizumi is currently employed at Citizen Watch Company, Ltd., where he continues to innovate in the field of printing technology. His work has been instrumental in advancing the capabilities of printers, making them more efficient and user-friendly.

Collaborations

Throughout his career, Koizumi has collaborated with notable colleagues, including Yasuo Iwata and Masao Kunita. These collaborations have contributed to the development of cutting-edge technologies in the printing industry.

Conclusion

Michio Koizumi's contributions to printer technology through his patents and collaborations have significantly impacted the industry. His innovative spirit continues to drive advancements in printing solutions, making him a key figure in this 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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