Koji Washiyama

This inventor holds 4 USPTO granted patents. Top assignees: Kabushiki Kaisha Toshiba, Other. Active years: 2003-2014.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Koji Washiyama. Retrieved from https://idiyas.com/inventor/koji-washiyama

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

USPTO Granted Patents = 4

% Patents Active = 25.0

Average Co-Inventor Count = 4.8

ph-index = 1

Forward Citations = 15(Granted Patents)

Location History:

Saitama-ken, JP (2003)
Honjo, JP (2004)
Saitama, JP (2005)
Mie-ken, JP (2014)

Company Filing History:

3 out of 53,262

Kabushiki Kaisha Toshiba

patents

1 out of 834,513

Other

patents

Years Active: 2003-2014

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4 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 8836919 - Management method and system for exposure apparatus having alarm based on inclination amount and deviation from aligned position (2014-09-16),

2. 6946785 - Oxide composite particle and method for its production, phosphor and method for its production, color filter and method for its manufacture, and color display (2005-09-20),

3. 6699580 - Dispersion composition for black matrix, display, and process, for production display (2004-03-02),

4. 6630778 - Color CRT and production method therefor (2003-10-07),

Title: Koji Washiyama: Innovator in Exposure Apparatus and Optical Technologies

Introduction

Koji Washiyama is a notable inventor based in Mie, Japan. He has made significant contributions to the field of optical technologies, holding a total of 4 patents. His work primarily focuses on advancements in exposure apparatus and materials used in color displays.

Latest Patents

One of Washiyama's latest patents is a management method and system for exposure apparatus that includes an alarm based on the inclination amount and deviation from the aligned position. This innovative control method retrieves alignment correction amounts and inclination amounts of a wafer stage during exposure. It determines these values based on predetermined conditions and issues an alarm when both conditions are satisfied.

Another significant patent involves an oxide composite particle and its production method. This invention features fine gold particles within an oxide particle matrix, which absorb visible light at specific wavelengths. Additionally, he has developed a phosphor and a color filter, both of which utilize these oxide composite particles to enhance optical characteristics, heat resistance, and non-toxicity. These innovations contribute to the creation of color displays with improved brightness and contrast.

Career Highlights

Throughout his career, Koji Washiyama has worked with prominent companies, including Kabushiki Kaisha Toshiba. His experience in these organizations has allowed him to refine his expertise in optical technologies and exposure apparatus systems.

Collaborations

Some of his notable coworkers include Takeo Ito and Tsuyoshi Oyaizu. Their collaborative efforts have likely contributed to the advancements in the technologies that Washiyama has developed.

Conclusion

Koji Washiyama's contributions to the field of optical technologies and exposure apparatus have established him as a significant inventor. His innovative patents reflect his commitment to enhancing optical performance and display technologies.

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]