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For the Inventor, By the Inventor

Shimizu-cho, Sunto-gun, Japan

Usui Kokusai Sangyo Kaisha Limited


USPTO Granted Patents = 334


Trademarks = 5

Forward Citations = 3,783

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142 inventors (with patents filed for the assignee):

goldMedal Masayoshi Usui (89 out of 122 patents)

silverMedal Kazunori Takikawa (48 out of 54 patents)

bronzeMedal Katsushi Washizu (33 out of 39 patents)

4.  Hiroshi Inoue (17 out of 55 patents)

5.  Kikuo Asada (17 out of 19 patents)

6.  Shoichiro Usui (15 out of 15 patents)

7.  Nobuo Kato (13 out of 13 patents)

8.  Eiji Watanabe (13 out of 13 patents)

9.  Teruhisa Takahashi (13 out of 15 patents)

10.  Yuichi Ono (12 out of 14 patents)

11.  Ken Shiozaki (11 out of 11 patents)

12.  Yoshiyuki Serizawa (11 out of 13 patents)

13.  Koichi Hayashi (10 out of 13 patents)

14.  Kazuteru Mizuno (10 out of 10 patents)

15.  Kazumi Fukaya (10 out of 10 patents)


Core Competencies:
Fuel Injection Technology
Direct Injection Engines
High-Pressure Fuel Pipes
Heat Exchangers
Fan Clutch Devices
Corrosion Resistant Materials
Polymer Electrolyte Fuel Cells
Steel Pipe Manufacturing
Common Rail Systems
EGR Gas Cooling
Brazing Techniques
Fluid Conveyance Solutions

334 patents:

1. 10408177 - Steel fuel conveying pipe (2019-09-10),
2. 10273919 - End seal structure of fuel rail for gasoline direct-injection engine (2019-04-30),
3. 10221902 - Temperature-sensitive fluid fan clutch device (2019-03-05),
4. 10113522 - End seal structure of a fuel rail for a gasoline direct injection engine (2018-10-30),
5. 10032537 - Separator material for polymer electrolyte fuel cell having excellent corrosion resistance, conductivity and formability, and method for manufacturing same (2018-07-24),
6. 10012192 - End seal structure of a fuel rail for a gasoline direct injection engine (2018-07-03),
7. D812201 - High-pressure fuel injection pipe (2018-03-06),
8. D812200 - High-pressure fuel injection pipe (2018-03-06),
9. D812199 - High-pressure fuel injection pipe (2018-03-06),
10. 9664239 - Highly reactive fluid fan clutch device (2017-05-30),
11. 9664163 - Terminal structure of high-pressure fuel pipe for direct injection engine (2017-05-30),
12. 9611972 - Pipe having heat-resistant and corrosion-resistant plating layer that has excellent workability (2017-04-04),
13. 9599080 - Terminal structure of high-pressure fuel pipe for direct injection engine (2017-03-21),
14. D764640 - High pressure fuel injection pipe (2016-08-23),
15. 9328781 - External-control type fan clutch device (2016-05-03),
USUI KOKUSAI SANGYO KAISHA LIMITED is a leading global manufacturer specializing in automotive engine components, industrial machinery, and environmental products. With over 90 years of experience, the company is committed to providing high-quality products and services to various industries around the world. For more information, please visit their official website.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

334 Patents

#1 in Shimizu-cho, Sunto-gun

#483 in Japan

#2,634 in the World

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Shimizu-cho, Sunto-gun, Japan

Usui Kokusai Sangyo Kaisha Limited

Forward Citations = 3,783

142 inventors:

goldMedal Masayoshi Usui (89 out of 122 patents)

silverMedal Kazunori Takikawa (48 out of 54 patents)

bronzeMedal Katsushi Washizu (33 out of 39 patents)

4.  Hiroshi Inoue (17 out of 55 patents)

5.  Kikuo Asada (17 out of 19 patents)

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