Hofu, Japan

Seiichi Watanabe

This inventor holds 62 USPTO granted patents and 1 published patent application and 4 EPO patents, primarily in Plasma Processing. Top assignees: Hitachi, Ltd., Panasonic Intellectual Property Management Co., Ltd., Hitachi-High-Technologies Corporation. Active years: 1976-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Seiichi Watanabe. Retrieved from https://idiyas.com/inventor/seiichi-watanabe-h9x9zujz

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

Calculating rank
USPTO Granted Patents = 62 

% Patents Active = 88.7

 

Average Co-Inventor Count = 2.8

ph-index = 13

Forward Citations = 1,225(Granted Patents)

Forward Citations (Not Self Cited) = 1,163(Dec 10, 2025)


Location History:

  • Machida, JA (1976 - 1977)
  • Chiyoda-ku, JP (1998 - 1999)
  • Kudamatsu, JP (1990 - 2000)
  • Tokuyama, JP (2004 - 2008)
  • Hofu, JP (2009 - 2013)
  • Hokkaido, JP (2015)
  • Houfu, JP (2011 - 2016)
  • Kyoto, JP (2017)
  • Sapporo, JP (2013 - 2021)
  • Tokyo, JP (1987 - 2024)

Company Filing History:


Years Active: 1976-2026

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Areas of Expertise:
Portable Computer
Payment Terminal
Data Processing
Plasma Processing
Battery Charger
Barcode Reader
Nanocrystal Production
Electronic Components
Conductive Materials
Steel Production
Surface Treatment
Sample Processing
62 patents (USPTO):Explore Patents

Title: The Innovative Journey of Seiichi Watanabe

Introduction: Seiichi Watanabe, a prolific inventor based in Hofu, Japan, is renowned for his contributions to the fields of plasma processing and fuel cell technology. With an impressive portfolio that includes 45 patents, Watanabe's innovations have significantly impacted various technological advancements.

Latest Patents: Watanabe's recent patents showcase his expertise and creativity. One notable invention is a plasma processing apparatus that effectively performs processing on samples within a dedicated chamber. This innovative apparatus includes a radio frequency power source designed to generate plasma and a data processing apparatus that analyzes light emission data using an adaptive double exponential smoothing method. This method dynamically adjusts the smoothing parameter based on errors observed between the input data and predicted values, enhancing the accuracy of the processed information.

Another of his recent inventions involves a highly reliable fuel cell that improves power generation efficiency while minimizing damage to the electrode and electrolyte film. This fuel cell design features a support substrate with a mesh-like support portion, a first electrode on that substrate, and an electrolyte film configured with a second electrode. The innovative use of a mesh-like shape for the first electrode enhances its structural integrity and operational efficiency.

Career Highlights: Watanabe's career includes significant roles in prominent companies such as Hitachi, Ltd. and Hitachi High Technologies Corporation. His tenure at these organizations allowed him to contribute to leading-edge technologies and establish himself as a respected inventor in his field.

Collaborations: Throughout his career, Watanabe has collaborated with talented individuals, including fellow innovators Naoki Yasui and Hitoshi Tamura. These partnerships have fostered a collaborative spirit that has led to multiple successful inventions and advancements in technology.

Conclusion: Seiichi Watanabe's inventive spirit and dedication to innovation have made a profound impact in his industry. With a rich history of patents and groundbreaking inventions, he continues to inspire future generations of inventors and researchers. His work exemplifies the potential of creativity in driving technological progress and addressing industry challenges.

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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