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For the Inventor, By the Inventor

Ebina, Japan

Ryuichi Kojima

This inventor holds 7 USPTO granted patents. Top assignees: Fuji Xerox Co., Ltd., Nec Corporation. Active years: 2001-2007.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ryuichi Kojima. Retrieved from https://idiyas.com/inventor/ryuichi-kojima-xsczafey

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

USPTO Granted Patents = 7

% Patents Active = 71.4

Average Co-Inventor Count = 1.8

ph-index = 3

Forward Citations = 70(Granted Patents)


Location History:

  • Tokyo, JP (2001 - 2002)
  • Kanagawa, JP (2004)
  • Ebina, JP (2005 - 2007)

Company Filing History:

goldMedal4 out of 11,665 
 
Fuji Xerox Co., Ltd.
 patents
silverMedal3 out of 36,684 
 
Nec Corporation
 patents

Years Active: 2001-2007

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7 patents (USPTO):Explore Patents
1. 7192118 - Droplet ejecting head and droplet ejecting apparatus (2007-03-20),
2. 6921149 - Liquid drop discharging head and liquid drop discharging device (2005-07-26),
3. 6719391 - Ink jet recording apparatus and ink jet recording method (2004-04-13),
4. 6450615 - Ink jet printing apparatus and method using a pressure generating device to induce surface waves in an ink meniscus (2002-09-17),
5. 6439685 - Printing apparatus and method thereof (2002-08-27),
6. 6328421 - Fluid drop projecting head using taper-shaped chamber for generating a converging surface wave (2001-12-11),
7. 6196664 - Ink droplet eject apparatus and method (2001-03-06),

Title: Ryuichi Kojima: Innovator in Droplet Ejecting Technology

Introduction

Ryuichi Kojima is a prominent inventor based in Ebina, Japan. He holds a total of 7 patents that showcase his contributions to the field of droplet ejecting technology. His innovative designs have significantly advanced the capabilities of printing and imaging technologies.

Latest Patents

Kojima's latest patents include a droplet ejecting head and a droplet ejecting apparatus. These inventions feature a unique arrangement of ejectors that alternate positions in a main scanning direction, which helps to reduce density unevenness while maintaining high recording speeds. This technology allows for high-quality image recording without compromising efficiency. Another notable patent is the liquid drop discharging head, which also focuses on reducing print density variations while ensuring high-speed recording. The design incorporates a matrix array head that mixes dots of varying diameters, enhancing the uniformity of the printed result.

Career Highlights

Throughout his career, Ryuichi Kojima has worked with notable companies such as Fuji Xerox Co., Ltd. and NEC Corporation. His experience in these organizations has contributed to his expertise in developing advanced printing technologies.

Collaborations

Kojima has collaborated with esteemed colleagues, including Yasuhiro Otsuka and Masakazu Okuda. Their combined efforts have led to significant advancements in the field of droplet ejecting technology.

Conclusion

Ryuichi Kojima's innovative work in droplet ejecting technology has made a lasting impact on the printing industry. His patents reflect a commitment to enhancing image quality and recording speed, solidifying his reputation as a leading inventor 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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