Otsu, Japan

Tomonari Kawaguchi

This inventor holds 4 USPTO granted patents. Top assignee: Sanyo Electric Co., Ltd.. Active years: 1991-2009.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tomonari Kawaguchi. Retrieved from https://idiyas.com/inventor/tomonari-kawaguchi

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


% Patents Active = 100.0

Average Co-Inventor Count = 2.4

ph-index = 4

Forward Citations = 100(Granted Patents)


Location History:

  • Ohtsu, JP (1998)
  • Otsu, JP (1991 - 2000)
  • Osaka-fu, JP (2009)

Company Filing History:


Years Active: 1991-2009

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4 patents (USPTO):Explore Patents

Title: Innovative Contributions of Tomonari Kawaguchi

Introduction: Tomonari Kawaguchi, an esteemed inventor based in Otsu, Japan, is renowned for his significant contributions to the field of home appliances, particularly in washing machine technology. With four registered patents under his name, Kawaguchi has demonstrated a commitment to enhancing the efficiency and effectiveness of washing machines, benefiting consumers worldwide.

Latest Patents: Among his notable inventions, Kawaguchi's latest patents include a Drum Type Washing Machine and an innovative Spin Extractor. The Drum Type Washing Machine introduces a mechanism for optimizing the distribution of laundry articles within the drum during the initial phases of dehydration. By controlling the drum's rotation speed to a consistent 50 r.p.m., it monitors the load's response to ensure efficient distribution before increasing the speed to 80 r.p.m. This sequence of actions helps in adequately positioning the laundry against the drum’s interior, thereby enhancing the dehydration process.

The Spin Extractor patent showcases a speed controller system that establishes a constant voltage for the motor. This invention accounts for large masses of laundry by allowing the drum to rotate at lower speeds initially. The design promotes a gradual increase in speed as the load lightens, ultimately achieving efficient laundry extraction while maintaining even distribution on the drum's interior surface.

Career Highlights: Kawaguchi's career is characterized by his pivotal role in developing advanced washing technologies at Sanyo Electric Co., Ltd. His extensive experience in this domain has allowed him to lead initiatives that prioritize user-centered design and operational efficiency.

Collaborations: Throughout his career, Kawaguchi has worked closely with colleagues such as Kiyoyuki Suo and Koichi Mori. Together, they have contributed to numerous innovations, reinforcing the collaborative spirit within Sanyo Electric Co., Ltd., and enabling groundbreaking advancements in washing machine technology.

Conclusion: Tomonari Kawaguchi's inventive spirit and innovative designs continue to influence the home appliance industry significantly. His patents not only reflect his technical expertise but also demonstrate a deep understanding of consumer needs. Through his ongoing work, Kawaguchi remains a key figure in driving forward the evolution of washing machines, ensuring they remain efficient, reliable, and user-friendly for households globally.

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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