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For the Inventor, By the Inventor

Kanagawa, Japan

Miyoko Hamao

This inventor holds 9 USPTO granted patents. Top assignees: Atsugi Unisia Corp., Unisia Jecs Corporation. Active years: 1992-2003.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Miyoko Hamao. Retrieved from https://idiyas.com/inventor/miyoko-hamao

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

USPTO Granted Patents = 9

% Patents Active = 88.9

Average Co-Inventor Count = 3.1

ph-index = 5

Forward Citations = 60(Granted Patents)


Location History:

  • Atsugi, JP (1993 - 1997)
  • Kanagawa, JP (1992 - 2003)

Company Filing History:

goldMedal5 out of 134 
 
Atsugi Unisia Corp.
 patents
silverMedal4 out of 556 
 
Unisia Jecs Corporation
 patents

Years Active: 1992-2003

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9 patents (USPTO):Explore Patents
1. 6599111 - Vane pump having an intake groove through a side wall member (2003-07-29),
2. 5613840 - Pump including a control valve and sealing member (1997-03-25),
3. 5595478 - Pump and control valve with annular sealing member to prevent corrosion (1997-01-21),
4. 5540566 - Pump including a control valve (1996-07-30),
5. 5236315 - Hydraulic pump for power-assisted steering system (1993-08-17),
6. 5170626 - Hydraulic flow control system for automotive vehicle (1992-12-15),
7. 5141418 - Variable capacity type vane pump with a variable restriction orifice (1992-08-25),
8. 5112199 - Fluid pump unit with flow control valve (1992-05-12),
9. 5098259 - Fluid pump unit with flow control valve (1992-03-24),

Title: The Innovative Contributions of Miyoko Hamao

Introduction

Miyoko Hamao is a distinguished inventor based in Kanagawa, Japan. She has made significant contributions to the field of engineering, particularly in the development of advanced pump technologies. With a total of nine patents to her name, Hamao's work exemplifies innovation and technical expertise.

Latest Patents

Among her latest patents is a vane pump featuring an intake groove through a side wall member. This innovative design includes a pump housing with an inlet, an outlet, and a hollow space that houses a cam ring and a rotor. The rotor is equipped with multiple vanes that slide within corresponding slots, allowing for efficient fluid movement. Another notable patent involves a pump that incorporates a control valve to regulate the flow of working fluid to an actuator. This design emphasizes environmental protection through the use of a sealing member that prevents exposure at the junction between the pump body and a washer.

Career Highlights

Miyoko Hamao has worked with prominent companies such as Atsugi Unisia Corporation and Unisia Jecs Corporation. Her experience in these organizations has allowed her to refine her skills and contribute to various engineering projects.

Collaborations

Hamao has collaborated with notable colleagues, including Kazuyoshi Ishizaki and Mizuo Ohtaki. These partnerships have fostered a creative environment that has led to the development of her innovative patents.

Conclusion

Miyoko Hamao's contributions to engineering and her impressive portfolio of patents highlight her role as a leading inventor in her field. Her work continues to influence advancements in pump technology and showcases the importance of innovation in engineering.

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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