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For the Inventor, By the Inventor

Okazaki, Japan

Seiji Yamamoto

This inventor holds 4 USPTO granted patents. Top assignee: Futaba Industrial Co., Ltd.. Active years: 2002-2004.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Seiji Yamamoto. Retrieved from https://idiyas.com/inventor/seiji-yamamoto-agnywmon

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

Calculating rank
USPTO Granted Patents = 4

% Patents Active = 75.0

Average Co-Inventor Count = 5.1

ph-index = 3

Forward Citations = 36(Granted Patents)


Company Filing History:

goldMedal4 out of 140 
 
Futaba Industrial Co., Ltd.
 patents

Years Active: 2002-2004

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4 patents (USPTO):Explore Patents
1. 6757974 - Fuel inlet and manufacturing method thereof (2004-07-06),
2. 6615489 - Method of manufacturing a fuel inlet (2003-09-09),
3. 6453714 - Method of forming an eccentrically expanded pipe and eccentrically pipe-expanding device (2002-09-24),
4. 6390124 - Fuel inlet and manufacturing method thereof (2002-05-21),

Title: Seiji Yamamoto: Innovator in Fuel Inlet Technology

Introduction

Seiji Yamamoto is a notable inventor based in Okazaki, Japan. He has made significant contributions to the field of fuel inlet technology, holding a total of 4 patents. His work focuses on improving the design and manufacturing processes of fuel inlets, which are crucial components in various automotive applications.

Latest Patents

One of Seiji Yamamoto's latest patents is for a fuel inlet and its manufacturing method. This innovative fuel inlet comprises an inlet pipe, a breather tube, a retainer, and a spiral groove. The inlet pipe is crafted from metal and features an expanded portion, a taper portion, and a main body, arranged sequentially from the fuel port. The expanded portion is designed by bulging the pipe to increase its diameter. To prevent defects such as cracks during this process, materials like SUS304, SUS304L, or SUS436 are utilized. The main body has a diameter of 25.4 mm, while the expanded portion measures 50 mm. Additionally, a spiral groove is formed near the open end of the expanded portion, allowing for a screw-type fuel port cap to be attached. An outer-cylinder-like flange is also integrated into the design.

The manufacturing method for this fuel inlet enhances its anti-rust properties. Stainless pipes are used for both the inlet pipe and the breather tube. The process includes several steps: a pipe expanding process to enlarge the inlet pipe's end portion, a screw-thread forming process to create a helical groove, a welding process to attach the breather tube, and a coating process that applies a cationic electrodeposition coating after welding. This sequence results in a fuel inlet with improved durability against rust.

Career Highlights

Seiji Yamamoto is currently employed at Futaba Industrial Co., Ltd., where he continues to innovate in the field of fuel technology. His expertise and dedication have led to advancements that benefit the automotive industry.

Collaborations

Throughout his career, Seiji has collaborated with notable colleagues, including Tsuguo Kido and Toyohisa Kawabe. Their teamwork has contributed to the successful development of various projects and patents.

Conclusion

Seiji Yamamoto's contributions to fuel inlet technology demonstrate his commitment to innovation and excellence. His patents reflect a deep understanding of engineering principles and

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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