Sadatomo Kuribayashi

This inventor holds 9 USPTO granted patents, plus 1 CIPO patent and 4 EPO patents. Top assignees: Kay Seven Co., Ltd., Kamome Propeller Co., Ltd., National Institute of Maritime, Port and Aviation Technology. Active years: 1985-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Sadatomo Kuribayashi. Retrieved from https://idiyas.com/inventor/sadatomo-kuribayashi

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 = 100.0

CIPO Patents = 1 (Patent Applications = 1)

EPO Patents = 4 (Patent Applications = 5)

Average Co-Inventor Count = 1.2

ph-index = 4

Forward Citations = 47(Granted Patents)

Location History:

Kakinokizaka, Tokyo 152, JP (1985)
Tokyo, JP (1993 - 2024)

Company Filing History:

Kamome Propeller Co., Ltd.

patent

1 out of 9

National Institute of Maritime, Port and Aviation Technology

patents

4. 1 out of 1

Yamanaka Shipbuilding Co., Ltd.

patent

5. 2 out of 834,570

Other

patents

where one patent can have more than one assignee

Years Active: 1985-2025

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9 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12448106 - Gate rudder including left rudder and right rudder disposed left and right of propeller of ship (2025-10-21),

2. 12415593 - Rudder (2025-09-16),

3. 11945564 - Steering device (2024-04-02),

4. 9937992 - Steering device and method for steering the same (2018-04-10),

5. 5700197 - Flexible shaft coupling having a plurality of driving side leaf spring (1997-12-23),

6. 5324234 - Shaft coupling (1994-06-28),

7. 5284455 - Shaft coupling having multiple rib connectors (1994-02-08),

8. 5267903 - Shaft coupling (1993-12-07),

9. 4510880 - Rudder arrangement for ships (1985-04-16),

Title: The Innovative Contributions of Sadatomo Kuribayashi

Introduction

Sadatomo Kuribayashi is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of marine engineering, particularly in the design of rudder systems for ships. With a total of 9 patents to his name, Kuribayashi's work focuses on enhancing energy efficiency during maritime voyages.

Latest Patents

One of Kuribayashi's latest patents is a gate rudder that includes a left rudder and a right rudder positioned on either side of a ship's propeller. This innovative design aims to reduce energy consumption during a ship's voyage. The gate rudder features a first rudder portion that extends horizontally and a second rudder portion that extends vertically. The dimensions of the rudder are carefully calculated to optimize performance, with the propeller located within a specific range of the rudder's chord length. Another significant patent involves a rudder assembly that produces substantial thrust, further contributing to energy efficiency for vessels during their journeys. This assembly consists of first and second rudder units arranged on both sides of the propellers, designed to enhance thrust while minimizing energy use.

Career Highlights

Throughout his career, Kuribayashi has worked with various companies, including Kay Seven Co., Ltd. His experience in the industry has allowed him to develop innovative solutions that address the challenges faced by modern maritime vessels.

Collaborations

Kuribayashi has collaborated with several professionals in his field, including Noriyuki Sasaki. These partnerships have fostered a creative environment that encourages the development of groundbreaking technologies in marine engineering.

Conclusion

Sadatomo Kuribayashi's contributions to the field of marine engineering through his innovative rudder designs demonstrate his commitment to enhancing energy efficiency in maritime travel. His patents reflect a deep understanding of engineering principles and a dedication to improving vessel performance.

Profile summary based on public USPTO records.