Naoto Yumisashi

This inventor holds 13 USPTO granted patents and 2 published patent applications, plus 1 CIPO patent and 8 EPO patents. Top assignees: Aisin Seiki Kabushiki Kaisha, Toyota Jidosha Kabushiki Kaisha, Aisin Corporation. Active years: 2005-2022.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Naoto Yumisashi. Retrieved from https://idiyas.com/inventor/naoto-yumisashi

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

USPTO Granted Patents = 13 (Patent Applications = 2)

% Patents Active = 53.8

CIPO Patents = 1

EPO Patents = 8 (Patent Applications = 12)

Average Co-Inventor Count = 3.5

ph-index = 4

Forward Citations = 40(Granted Patents)

Location History:

Anjo, JP (2005)
Nagoya, JP (2015 - 2021)
Kariya, JP (2015 - 2022)

Company Filing History:

11 out of 5,207

Aisin Seiki Kabushiki Kaisha

patents

5 out of 38,970

Toyota Jidosha Kabushiki Kaisha

Aisin Kabushiki Kaisha

patents

where one patent can have more than one assignee

Years Active: 2005-2022

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13 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 11441690 - Valve device and assembly method of valve device (2022-09-13),

2. 11199124 - Cooling apparatus for internal combustion engine (2021-12-14),

3. 11143327 - Cooling apparatus for internal combustion engine (2021-10-12),

4. 10927748 - Flow passage device and engine cooling system (2021-02-23),

5. 10514103 - Refrigerant control valve apparatus (2019-12-24),

6. 10513968 - Refrigerant control valve apparatus (2019-12-24),

7. 10513966 - Refrigerant control valve device (2019-12-24),

8. 10385759 - Cooling system for internal combustion engine (2019-08-20),

9. 10072556 - Refrigerant control valve apparatus (2018-09-11),

10. 10012132 - Cooling system of internal combustion engine (2018-07-03),

11. 9163553 - Vehicular coolant control valve (2015-10-20),

12. 8972154 - Engine stop determination device and engine stop determination method (2015-03-03),

13. 6976460 - Variable valve timing control device (2005-12-20),

Title: Naoto Yumisashi: Innovator in Valve Technology

Introduction

Naoto Yumisashi is a prominent inventor based in Nagoya, Japan. He has made significant contributions to the field of valve technology, holding a total of 13 patents. His innovative designs have advanced the functionality and efficiency of various mechanical systems.

Latest Patents

Yumisashi's latest patents include a valve device and an assembly method for the valve device. This valve device features a housing with a cylindrical internal peripheral wall, a fluid introduction path, and a fluid discharge path. It also includes a valve element with a communication path that connects the fluid introduction and discharge paths. Additionally, the valve element rotation mechanism allows for smooth operation within the housing. Another notable patent is a cooling apparatus for internal combustion engines, which incorporates a pump, radiator, flow rate adjustment valve, and a controller. This system optimizes coolant flow based on pressure differences, enhancing engine performance.

Career Highlights

Throughout his career, Yumisashi has worked with leading companies in the automotive industry, including Aisin Seiki and Toyota Motor Corporation. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking innovations in valve technology.

Collaborations

Yumisashi has collaborated with notable professionals in his field, including Koichi Maruyama and Masanobu Matsusaka. These partnerships have fostered a creative environment that has led to the development of advanced technologies.

Conclusion

Naoto Yumisashi's contributions to valve technology and his innovative patents have made a lasting impact on the industry. His work continues to inspire future advancements in mechanical engineering.

Profile summary based on public USPTO records.