Tokyo, Japan

Masaaki Maehara

This inventor holds 3 USPTO granted patents. Top assignee: Hitachi, Ltd.. Active years: 1989-1994.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masaaki Maehara. Retrieved from https://idiyas.com/inventor/masaaki-maehara

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


% Patents Active = 100.0

Average Co-Inventor Count = 2.3

ph-index = 3

Forward Citations = 31(Granted Patents)


Location History:

  • Tokyo, JP (1989 - 1990)
  • Ohme, JP (1994)

Company Filing History:


Years Active: 1989-1994

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3 patents (USPTO):Explore Patents

Title: Masaaki Maehara: Innovator in Semiconductor Technology

Introduction

Masaaki Maehara is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 3 patents. His work focuses on improving the reliability and efficiency of semiconductor devices.

Latest Patents

One of his latest patents is for a semiconductor device that enhances the state of filling in connection holes while improving the reliability of wiring materials in bipolar semiconductor devices or bipolar CMOS devices. This innovation includes a tungsten film formed by the CVD method in the first wiring layer, which facilitates electrical conduction among semiconductor elements. The tungsten film not only improves the filling state of connection holes but also increases resistance against electromigration, thereby enhancing overall reliability.

Another notable patent is for an apparatus designed for the selective deposition of metal thin films. This apparatus utilizes a chemical deposition method that ensures good selectivity, reproducibility, and a high deposition rate. By employing a light source to heat only the substrate while cooling other areas, hydrogen atoms are prevented from adhering to portions of the substrate that are not intended for metal deposition.

Career Highlights

Masaaki Maehara is currently associated with Hitachi, Ltd., where he continues to innovate in semiconductor technology. His work has been instrumental in advancing the capabilities of semiconductor devices, making them more reliable and efficient.

Collaborations

He has collaborated with notable coworkers such as Eisuke Nishitani and Mitsuaki Horiuchi, contributing to various projects that push the boundaries of semiconductor technology.

Conclusion

Masaaki Maehara's contributions to semiconductor technology through his innovative patents have significantly impacted the industry. His work continues to pave the way for advancements in the reliability and efficiency of semiconductor devices.

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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