Tokyo, Japan

Takashi Ejiri

This inventor holds 20 USPTO granted patents and 1 published patent application and 1 EPO patent, primarily in Valve Technology. Top assignees: Fujikura Rubber Ltd., Fujikin Inc., Neriki Valve Co., Ltd.. Active years: 1987-2018.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takashi Ejiri. Retrieved from https://idiyas.com/inventor/takashi-ejiri

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

USPTO Granted Patents = 20 

% Patents Active = 90.0


Average Co-Inventor Count = 1.6

ph-index = 8

Forward Citations = 189(Granted Patents)


Company Filing History:


Years Active: 1987-2018

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Areas of Expertise:
Multistage Piston Actuator
On/Off Valve
Pressure Reducing Valve
Directional Control Valve
Pneumatically Operated Valve
Toggle Valve
Microflow Rate Adjusting Device
Manual Opening Apparatus
Locking Device
Visual Status Checking Apparatus
Diaphragm Type Valve
20 patents (USPTO):Explore Patents

Title: Takashi Ejiri: Innovator in Actuation and Control Technologies

Introduction

Takashi Ejiri, an accomplished inventor based in Tokyo, Japan, has made significant contributions to the field of mechanistic actuation and control technologies. With a commendable portfolio of 20 patents, his inventions address critical needs in industries such as engineering and automation.

Latest Patents

Among his latest innovations is the **Multistage Piston Actuator**, which exerts a driving pressure against a spring pressure into pressure chambers of piston bodies within a cylinder. This actuator features a unique design where each piston body is integrated with a partition and an axial rod that includes an air passage connected to the pressure chambers. The design not only enhances efficiency but also ensures precise control over the push rod's operation.

Another noteworthy invention is the **Slow-Acting On/Off Valve**. This valve comprises a valve-opening pressure chamber designed to facilitate a controlled movement of the valve body. The valve features a pressure regulation valve that fills the chamber with air until it reaches a reserve pressure and a flow rate regulation valve that supplies air incrementally for precise operations. This innovation minimizes the delay between receiving a signal and executing a valve opening, making it particularly beneficial in various applications.

Career Highlights

Throughout his career, Takashi Ejiri has had the opportunity to work with reputable organizations, including Fujikura Rubber Ltd. His experiences in these dynamic settings have undoubtedly enhanced his inventive capabilities and proficiency in developing advanced technologies.

Collaborations

Takashi has collaborated with prominent individuals such as Ryozo Ariizumi and Mitsunori Hoshi. These partnerships have fostered an environment of shared ideas and collective innovation, further driving the impact of his work in the industry.

Conclusion

Takashi Ejiri exemplifies the spirit of innovation through his impactful inventions and collaborations. His commitment to advancing actuator and valve technologies not only showcases his technical expertise but also significantly contributes to the progress of the engineering field. As he continues to explore new ideas, Takashi remains a vital figure in the realm of innovation.

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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