Nakano, Japan

Yoko Kosaka

This inventor holds 5 USPTO granted patents and 2 published patent applications and 4 EPO patents. Top assignees: Kabushiki Kaisha Toshiba, Toshiba Energy Systems & Solutions Corporation. Active years: 2014-2020.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoko Kosaka. Retrieved from https://idiyas.com/inventor/yoko-kosaka-4yf775bz

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

USPTO Granted Patents = 5 

% Patents Active = 60.0

 

Average Co-Inventor Count = 5.4

ph-index = 2

Forward Citations = 11(Granted Patents)


Location History:

  • Nakano-ku, JP (2014 - 2017)
  • Nakano, JP (2016 - 2020)

Company Filing History:


Years Active: 2014-2020

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5 patents (USPTO):Explore Patents

Title: The Innovative Journey of Yoko Kosaka: Pioneering Patents in Power Control Systems

Introduction: Yoko Kosaka, an esteemed inventor based in Nakano, Japan, has amassed a remarkable portfolio of five patents throughout her career. Her contributions to innovative technology, particularly in power control systems, reflect a deep commitment to enhancing efficiency and stability within electrical systems.

Latest Patents: Among her notable inventions, Kosaka's latest patents include a groundbreaking Voltage Reactive Power Control Device and a corresponding Voltage Reactive Power Control Method. This device features a bus voltage fluctuation extracting unit that identifies fluctuations in the secondary-side bus voltage. Additionally, it encompasses an RE component extracting unit that isolates fluctuation components attributable to renewable energy generation. By creating a reactive power command value that mitigates these fluctuations, Kosaka's invention represents a significant advancement in maintaining system stability. Another key patent is her Power-System Short-Circuit Capacity Monitoring Method and System. This system synchronously measures phasor quantities of voltage and current at distinct measurement points, enabling precise short-circuit capacity monitoring through a phase-correcting block and backward impedance estimating block.

Career Highlights: Yoko Kosaka's career has been marked by her tenure at prominent companies such as Kabushiki Kaisha Toshiba and Toshiba Energy Systems & Solutions Corporation. Her experiences at these organizations have undoubtedly shaped her innovative approach and expertise in the field, contributing to her impressive patent portfolio.

Collaborations: Throughout her career, Kosaka has collaborated with skilled professionals such as Takenori Kobayashi and Katsutoshi Hiromasa. These collaborations have fostered a creative environment where innovative ideas could flourish, pushing the boundaries of technology in power systems.

Conclusion: Yoko Kosaka stands out as a formidable force in the realm of technology innovation. Her patents not only reflect advanced engineering capabilities but also a forward-thinking perspective on the integration of renewable energy sources into existing power systems. As she continues her work, the impact of her inventions will undoubtedly resonate within the industry for years to come.

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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