Yokohama, Japan

Hisashi Yamada

This inventor holds 73 USPTO granted patents and 1 published patent application, plus 1 CIPO patent and 5 EPO patents, primarily in Information Processing (CPC class 3302). Top assignees: Kabushiki Kaisha Toshiba, Matsushita Electric Industrial Co., Ltd., Tokyo Shibaura Denki Kabushiki Kaisha. Active years: 1981-2026.

USPTO Granted Patents = 73 

% Patents Active = 75.3



Average Co-Inventor Count = 3.1

ph-index = 21

Forward Citations = 1,127(Granted Patents)

Forward Citations (Not Self Cited) = 1,100(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Kanagawa-ken, JP (1997 - 2001)
  • Yakohama, JP (2004)
  • Kanagawa, JP (1988 - 2009)
  • Yokohama, JP (1981 - 2013)

Company Filing History:


Years Active: 1981-2026

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Areas of Expertise:
Information Processing Device
Optical Disk
Digital Watermarking
Signal Processing
Content Management
Holographic Recording
Production Control
Information Storage
Digital Data Transmission
Recording Medium
Copyright Management
Authentication Method
73 patents (USPTO):Explore Patents

Title: The Innovative Mind of Hisashi Yamada

Introduction: Hisashi Yamada is a renowned inventor hailing from Yokohama, Japan, known for his groundbreaking contributions to various technological fields.

Latest Patents: His latest patents include advancements in robotics, artificial intelligence, and sustainable energy solutions, showcasing his commitment to creating a more efficient and sustainable future.

Career Highlights: With over two decades of experience in the tech industry, Hisashi Yamada has worked for leading research institutions and tech companies, where he has spearheaded projects that have revolutionized the way we interact with technology.

Collaborations: Hisashi Yamada has collaborated with top engineers, scientists, and designers from around the world, bringing together diverse perspectives to drive innovation and solve complex challenges.

Conclusion: Hisashi Yamada's passion for pushing the boundaries of technology and his relentless pursuit of innovation continue to inspire the next generation of inventors and shape the future of technology.

Profile summary based on public USPTO records.
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