Kanagawa, Japan

Yoshiyuki Ishiyama

This inventor holds 5 USPTO granted patents and 1 published patent application. Top assignee: Ricoh Company, Ltd.. Active years: 2005-2020.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshiyuki Ishiyama. Retrieved from https://idiyas.com/inventor/yoshiyuki-ishiyama

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

USPTO Granted Patents = 5 

% Patents Active = 20.0

Average Co-Inventor Count = 1.7

ph-index = 1

Forward Citations = 3(Granted Patents)


Location History:

  • Kanagawa-ken, JP (2008)
  • Kanagawa, JP (2005 - 2020)

Company Filing History:


Years Active: 2005-2020

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5 patents (USPTO):Explore Patents

Title: Yoshiyuki Ishiyama: Innovator in Liquid Discharging and Position Control Technologies

Introduction

Yoshiyuki Ishiyama is a prominent inventor based in Kanagawa, Japan. He has made significant contributions to the fields of liquid discharging devices and position control methods. With a total of five patents to his name, Ishiyama's work has had a substantial impact on technology and innovation.

Latest Patents

Ishiyama's latest patents include a liquid discharging device and a drive waveform control method. This device features a recording head with nozzles that discharge liquid to form images on target surfaces. It incorporates a moving unit that facilitates the movement of the recording head in both main and sub-scanning directions. Additionally, a drive waveform applying unit adjusts the drive waveform based on temperature detected by a temperature detecting unit. This innovative approach allows for improved control of the liquid discharging process.

Another notable patent is a position control method and device for optical disk technology. This method enables precise and stable control of an object lens's position relative to a recording medium. By reading address information on the medium and adjusting the polarity of the tracking error signal, Ishiyama's invention enhances the ability to locate the object lens accurately, even with low-quality or nonstandard recording media.

Career Highlights

Yoshiyuki Ishiyama is currently employed at Ricoh Company, Ltd., where he continues to develop cutting-edge technologies. His work has been instrumental in advancing the capabilities of liquid discharging devices and optical disk systems.

Collaborations

Ishiyama has collaborated with notable colleagues, including Toshihiro Yamashiro and Yutaka Shio. Their combined expertise has contributed to the successful development of innovative technologies in their respective fields.

Conclusion

Yoshiyuki Ishiyama is a distinguished inventor whose work in liquid discharging devices and position control methods has significantly influenced technology. His patents reflect a commitment to innovation and excellence in engineering.

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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