Sagamihara, Japan

Masashi Hasegawa

This inventor holds 3 USPTO granted patents. Top assignee: Denki Kagaku Kogyo Kabushiki Kaisha. Active years: 1976-1977.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masashi Hasegawa. Retrieved from https://idiyas.com/inventor/masashi-hasegawa-mckeetho

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 4.0

ph-index = 3

Forward Citations = 31(Granted Patents)


Location History:

  • Kanagawa, JA (1976)
  • Sagamihara, JA (1976 - 1977)

Company Filing History:


Years Active: 1976-1977

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3 patents (USPTO):Explore Patents

Title: **Masashi Hasegawa: Innovator in Semiconductor Technology**

Introduction

Masashi Hasegawa, a prominent inventor based in Sagamihara, Japan, has made significant contributions to the field of semiconductor technology. With a total of three patents to his name, he is recognized for his innovative approaches in semiconductor doping processes.

Latest Patents

Hasegawa's latest patents showcase his expertise in enhancing semiconductor performance. One of his notable inventions is a patent regarding "Solid diffusion dopants for semiconductors." This invention discloses a solid diffusion source for phosphorus doping, comprising a substance made from at least one compound from the group including Y.sub.2 O.sub.3, La.sub.2 O.sub.3, and Ce.sub.2 O.sub.3 along with P.sub.2 O.sub.5. It primarily focuses on a compound with a chemical formula R.sub.2 O.sub.3.5P.sub.2 O.sub.5, designed to improve semiconductor functionality.

Another key patent is for a "Composition for diffusing phosphorus," which involves a phosphorus nitride-silicon oxide composition. This composition is noted for its excellent thermal stability and diffusion characteristics, serving as a diffusant source for n-type impurities in semiconductor devices.

Career Highlights

Masashi Hasegawa has built an impressive career at Denki Kagaku Kogyo Kabushiki Kaisha, where his innovative work in semiconductor materials has significantly impacted the industry. His commitment to advancing semiconductor technology is evident in his various patents and contributions to the field.

Collaborations

Throughout his career, Hasegawa has collaborated with notable colleagues such as Hiroshi Oizumi and Mitsuo Yamashita. These partnerships have facilitated a productive exchange of ideas and expertise, fostering an environment of innovation and research that benefits the semiconductor sector.

Conclusion

Masashi Hasegawa stands out as a key figure in the realm of semiconductor technology. His patents not only reflect his innovative spirit but also contribute to the ongoing advancements in the industry. With a robust background and collaborative efforts, he continues to shape the future of semiconductor development.

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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