Osaka, Japan

Katsunori Nishii

This inventor holds 25 USPTO granted patents, primarily in Semiconductor Fabrication. Top assignees: Matsushita Electric Industrial Co., Ltd., Matsushita Electronics Corporation, Panasonic Corporation. Active years: 1994-2009.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsunori Nishii. Retrieved from https://idiyas.com/inventor/katsunori-nishii

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

Calculating rank

% Patents Active = 76.0

Average Co-Inventor Count = 3.7

ph-index = 7

Forward Citations = 173(Granted Patents)


Location History:

  • Hirakata, JP (1994 - 2006)
  • Osaka, JP (1996 - 2009)

Company Filing History:


Years Active: 1994-2009

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Areas of Expertise:
Semiconductor Device
Bipolar Transistor
Gallium Nitride
Surface Potential
Schottky Contact
Lateral Bipolar Transistor
RF Semiconductor
Field-Effect Transistor
Ammonia Plasma
Nitride Semiconductor
Fine Structure Electrode
25 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Katsunori Nishii

Introduction: Katsunori Nishii, based in Osaka, Japan, has made significant contributions to the field of semiconductor technology, holding 25 patents to his name. His work emphasizes advancements in semiconductor fabrication methods, showcasing his innovative spirit and dedication to pushing the boundaries of technology.

Latest Patents: Among his latest patents is a method of fabricating a semiconductor device that features an active region formed from a group III nitride semiconductor. This invention includes an insulating oxide film, which is created in the peripheral portion of the active region through the oxidation of the nitride semiconductor. A notable aspect of this patent is the inclusion of a gate electrode that is in Schottky contact with the active region, extending onto the insulating oxide film.

Another significant patent focuses on reducing surface potential in semiconductor devices. This method uses an active region composed of a group III-V nitride semiconductor, with ohmic and gate electrodes formed on it. By exposing the entire surface of the active region to plasma, this technique achieves a lower surface potential for electrons compared to traditional methods.

Career Highlights: Katsunori Nishii has worked with prestigious organizations, including Matsushita Electric Industrial Co., Ltd. and Matsushita Electronics Corporation. His tenure in these companies has allowed him to refine his skills and contribute to innovative solutions in semiconductor technology.

Collaborations: Throughout his career, Nishii has collaborated with esteemed colleagues such as Kaoru Inoue and Yoshito Ikeda. These collaborations have fostered an environment of creativity and innovation, leading to the advancement of various semiconductor fabrication methods.

Conclusion: Katsunori Nishii's impact on the semiconductor industry is profound, with his impressive portfolio of patents reflecting his innovative mindset. His contributions, characterized by groundbreaking methods of fabrication, continue to influence the development of semiconductor technology, establishing him as a notable figure in the field.

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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