Fujisawa, Japan

Hirofumi Sakamoto

This inventor holds 6 USPTO granted patents. Top assignees: Hitachi, Ltd., Isuzu Motors Limited, Other. Active years: 1997-2012.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hirofumi Sakamoto. Retrieved from https://idiyas.com/inventor/hirofumi-sakamoto-nilm3ckh

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


% Patents Active = 50.0

Average Co-Inventor Count = 3.6

ph-index = 4

Forward Citations = 36(Granted Patents)


Location History:

  • Chiyoda-ku, Tokyo JP (2008)
  • Fujisawa, JP (1997 - 2012)

Company Filing History:


Years Active: 1997-2012

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6 patents (USPTO):Explore Patents

Title: Hirofumi Sakamoto: Innovator in Plasma Display Technology

Introduction

Hirofumi Sakamoto is a notable inventor based in Fujisawa, Japan. He has made significant contributions to the field of plasma display technology, holding a total of 6 patents. His work has been instrumental in enhancing the performance and longevity of plasma display panels.

Latest Patents

One of Sakamoto's latest patents addresses the issue of color temperature changes in plasma display panels (PDP) over extended use. The initial color temperature setting can change due to the non-uniform deterioration of red, green, and blue fluorescent materials, which is caused by ultraviolet rays emitted during the panel's operation. To correct this, Sakamoto's invention involves adjusting the number of discharge pulses for the fluorescent materials based on a discharge pulse number correction curve, which corresponds to the cumulative elapsed driven time of the PDP. This innovative approach ensures that the color temperature remains consistent, enhancing the viewing experience.

Career Highlights

Throughout his career, Hirofumi Sakamoto has worked with prominent companies such as Hitachi, Ltd. and Isuzu Motors Limited. His experience in these organizations has allowed him to develop and refine his expertise in display technologies.

Collaborations

Sakamoto has collaborated with notable colleagues, including Hidenao Kubota and Masahiko Umeda. Their combined efforts have contributed to advancements in the field of plasma display technology.

Conclusion

Hirofumi Sakamoto's innovative work in plasma display technology has led to significant improvements in the performance and reliability of these devices. His contributions continue to influence the industry and enhance user experiences.

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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