Kanagawa, Japan

Hidefumi Yamashita

This inventor holds 4 USPTO granted patents. Top assignee: International Business Machines Corporation. Active years: 2004-2009.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hidefumi Yamashita. Retrieved from https://idiyas.com/inventor/hidefumi-yamashita

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 = 4.4

ph-index = 3

Forward Citations = 49(Granted Patents)


Location History:

  • Yamato, JP (2004 - 2006)
  • Kanagawa-ken, JP (2007 - 2009)

Company Filing History:


Years Active: 2004-2009

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4 patents (USPTO):Explore Patents

Title: Innovations of Hidefumi Yamashita

Introduction

Hidefumi Yamashita is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of liquid crystal display technology. With a total of 4 patents to his name, his work has had a considerable impact on the industry.

Latest Patents

Yamashita's latest patents focus on advancements in liquid crystal displays. One of his notable inventions is a liquid crystal display and method for manufacturing it. This innovation includes injection hole post structures that are compatible with liquid crystal. These structures are designed to prevent pollutants from an end-sealing material from penetrating the display area. This design helps to suppress picture quality issues that can occur in the display area. The liquid crystal display consists of a first substrate and a second substrate, which are positioned with a predetermined gap between them, where liquid crystal is sealed. Additionally, the display features post structures for controlling the gap and a sealing material that secures the liquid crystal within the gap. The end-sealing material is responsible for sealing the injection hole after the liquid crystal is injected. Furthermore, injection hole post structures are strategically placed near the injection hole to divide it into multiple portions.

Career Highlights

Yamashita is currently employed at International Business Machines Corporation, commonly known as IBM. His work at IBM has allowed him to collaborate with other talented individuals in the field.

Collaborations

Some of his notable coworkers include Tatsushi Koike and Hiroshi Niwa. Their collaborative efforts have contributed to the advancements in liquid crystal display technology.

Conclusion

Hidefumi Yamashita's innovations in liquid crystal display technology demonstrate his expertise and commitment to improving picture quality in displays. His contributions continue to influence the industry positively.

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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