Nagano, Japan

Yoshiro Koga

This inventor holds 47 USPTO granted patents and 1 published patent application and 1 EPO patent, primarily in Image Formation Technology. Top assignees: Seiko Epson Corporation, Takano Co., Ltd., Microvision, Inc.. Active years: 1991-2025.

USPTO Granted Patents = 47 

% Patents Active = 66.0


Average Co-Inventor Count = 2.7

ph-index = 11

Forward Citations = 334(Granted Patents)


Location History:

  • Suwa, JP (1991 - 2001)
  • Shiojiri, JP (2009)
  • Nagano-Ken, JP (2002 - 2010)
  • Nagano, JP (1991 - 2019)
  • Kamiina-gun, JP (2021 - 2024)

Company Filing History:


Years Active: 1991-2025

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Areas of Expertise:
Pressure-Sensitive Sensor
Image Forming Apparatus
Liquid Development
Toner Density
Rotary Solenoid
MEMS Scanner
Electrophotographic Process
Developing Device
Toner Fixing
Contact Transfer
Toner Storage
Laser Beam Scanning
47 patents (USPTO):Explore Patents

Title: The Innovative Mind of Yoshiro Koga: Pioneering Inventions in Nagano-ken, JP

Introduction: Yoshiro Koga, a prolific inventor based in Nagano-ken, JP, has made significant contributions to the field of rotary solenoids with an impressive portfolio of 45 patents.

Latest Patents: Among his recent innovations is a groundbreaking Rotary Solenoid, featuring a unique design with components such as a fixed body portion enclosing a pair of bearing portions, and a movable body portion with a rotation shaft and magnets for precise operation. Another notable invention is the Rotary Solenoid Drive Control Method, showcasing Koga's mastery in creating efficient and controlled movement mechanisms.

Career Highlights: Koga's exceptional talent has been showcased during his tenure at renowned companies such as Seiko Epson Corporation and Takano Co., Ltd., where he has worked tirelessly to bring his inventive ideas to life and push the boundaries of technology forward.

Collaborations: Throughout his career, Koga has collaborated closely with industry experts including Kaneo Yoda and Yujiro Nomura, fostering a culture of innovation and knowledge sharing that has resulted in groundbreaking inventions in the field of rotary solenoids.

Conclusion: Yoshiro Koga's unwavering passion for innovation and his relentless pursuit of excellence have solidified his position as a trailblazer in the world of rotary solenoids, leaving a lasting impact on the industry and inspiring future generations of inventors.

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