Hyogo, Japan

Hironori Sumomozawa

This inventor holds 32 USPTO granted patents and 1 published patent application and 1 EPO patent, primarily in Hydraulic Systems. Top assignees: Kanzaki Kokyukoki Mfg. Co., Ltd., Other. Active years: 1998-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hironori Sumomozawa. Retrieved from https://idiyas.com/inventor/hironori-sumomozawa

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

Calculating rank
USPTO Granted Patents = 32 

% Patents Active = 31.3


Average Co-Inventor Count = 2.6

ph-index = 10

Forward Citations = 399(Granted Patents)


Location History:

  • Amagasaki-shi Hyogo, JP (2005)
  • Amagasaki-shi, Hyogo, JP (2004 - 2007)
  • Amagasaki-shi, JP (2007)
  • Amagasaki, JP (1998 - 2011)
  • Hyogo, JP (2006 - 2011)

Company Filing History:


Years Active: 1998-2011

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Areas of Expertise:
Pump Unit
Hydraulic Transmission
Axle Driving Apparatus
Hydraulic Transaxle
Tandem Pump Unit
Hydraulically Driven Vehicle
Working Vehicle
Flexible Ports
32 patents (USPTO):Explore Patents

Title: Hironori Sumomozawa: Innovator in Hydraulic Systems

Introduction: Hironori Sumomozawa, based in Hyogo, Japan, is a prolific inventor with an impressive portfolio of 32 patents. His contributions primarily lie in the field of hydraulic systems, particularly for working vehicles, showcasing his innovative approach to engineering challenges.

Latest Patents: Sumomozawa's latest innovations include a pump unit and an axle driving apparatus. The pump unit incorporates an input shaft connected to a driving source's output shaft and features first and second hydraulic pump bodies within a housing. This design allows the pump housing to couple with the driving source, ensuring efficient operation free from the vehicle frame. Additionally, his axle driving apparatus integrates a hydraulic pump and motor within a hydrostatic transmission, streamlined by linear oil passages and a simplified link mechanism for enhanced control.

Career Highlights: Throughout his career, Hironori has contributed significantly to the engineering landscape while working at esteemed companies, including Kanzaki Kokyukoki Manufacturing Co., Ltd. His innovations in hydraulic systems have positioned him as a critical figure in advancing vehicle technology.

Collaborations: Collaborating with notable professionals like Ryota Ohashi and Kenichi Takada, Hironori has further bolstered his contributions to the field. Their combined expertise in hydraulic engineering has led to significant advancements in vehicle performance and functionality.

Conclusion: Hironori Sumomozawa's dedication to innovation in hydraulic systems continues to impact the industry positively. His extensive patent portfolio and collaborative efforts highlight his commitment to enhancing vehicle technology, establishing him as a respected inventor in his field.

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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