Tachikawa, Japan

Takeo Yamashita

This inventor holds 24 USPTO granted patents, primarily in Magnetic Recording Technology. Top assignees: Hitachi, Ltd., Hitachi Global Storage Technologies Japan, Ltd., Hitachi Metals, Ltd.. Active years: 1984-2013.

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

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


% Patents Active = 87.5

Average Co-Inventor Count = 4.8

ph-index = 11

Forward Citations = 299(Granted Patents)


Location History:

  • Hachioji, JP (1984 - 1990)
  • Tachikawa, JP (1988 - 2006)
  • Hamura, JP (2007)
  • Ome, JP (2013)

Company Filing History:


Years Active: 1984-2013

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Areas of Expertise:
Magnetic Head
Recording Medium
Magnetic Recording
Semiconductor Device
Magnetic Memory
Amorphous Magnetic Alloy
Magnetic Core
Magnetic Film
Wiring Arrangement
Composite Magnetic Head
Overshoot Current Control
Magnetic Recording System
24 patents (USPTO):Explore Patents

Title: **Innovative Contributions of Takeo Yamashita in Semiconductor Technology**

Introduction

Takeo Yamashita, based in Tachikawa, Japan, is a notable inventor recognized for his significant contributions to semiconductor technology. With an impressive portfolio of 24 patents, he has made remarkable strides in the field, showcasing his ingenuity and expertise.

Latest Patents

Among his latest innovations, Yamashita developed a duty compensation circuit. This circuit comprises a duty detection circuit, a duty adjustment signal generator, and a duty adjustment circuit. It is designed to detect duty by sampling a clock at timing obtained from a variable delay circuit. This innovation allows for duty compensation without the need for a clock operating at a higher speed than before the compensation.

Another notable patent is for a semiconductor device with an improved wiring arrangement that utilizes a projecting portion. This method of manufacturing involves a first wiring extending in one direction and a second wiring that connects to it in a direction orthogonal to the first. The arrangement offsets the connection center from the center of the first wiring, resulting in a more efficient design.

Career Highlights

Throughout his career, Takeo Yamashita has worked with prestigious companies, including Hitachi, Ltd. and Hitachi Metals, Ltd. His experience in these organizations has contributed to his extensive knowledge and expertise in semiconductor innovations.

Collaborations

Yamashita has collaborated with esteemed coworkers such as Noriyuki Kumasaka and Shigekazu Otomo. Their collective efforts have led to groundbreaking advancements in technology, reinforcing the importance of teamwork in the field of innovation.

Conclusion

Takeo Yamashita's contributions to semiconductor technology through his numerous patents highlight his role as a key innovator. His latest inventions exemplify the cutting-edge advancements that are crucial for the evolution of electronic devices. As technology continues to develop, the implications of Yamashita's work will likely resonate throughout the industry for years to come.

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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