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For the Inventor, By the Inventor

Kanagawa, Japan

Keiji Ueda

USPTO Granted Patents = 9 

Average Co-Inventor Count = 4.2

ph-index = 4

Forward Citations = 54(Granted Patents)


Location History:

  • Kawasaki, JP (2010)
  • Kanagawa-ken, JP (2014)
  • Kanagawa, JP (2013 - 2017)

Company Filing History:

goldMedal9 out of 28,544 
 
Ricoh Company, Ltd.
 patents

Years Active: 2010-2025

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9 patents (USPTO):Explore Patents
1. 12275247 - Liquid discharge head and liquid discharge apparatus (2025-04-14),
2. 9834853 - PZT precursor solution, method for producing PZT precursor solution, method for producing PZT film, method for producing electromechanical transducer element, and method for producing liquid discharge head (2017-12-05),
3. 9196821 - Electromechanical transducer, droplet ejection head, and method for manufacturing electromechanical transducer (2015-11-24),
4. 8727505 - Electromechanical transducer element, droplet discharge head, and droplet discharge device (2014-05-20),
5. 8690297 - Sol-gel liquid, electromechanical conversion element, liquid discharge head and inkjet recorder (2014-04-08),
6. 8684493 - Droplet-discharging-head manufacturing apparatus, droplet-discharging-head manufacturing method, droplet discharging head, droplet discharging device, and printing apparatus (2014-04-01),
7. 8646180 - Method for producing electromechanical transducer, electromechanical transducer produced by the method, liquid-droplet jetting head, and liquid-droplet jetting apparatus (2014-02-11),
8. 8425026 - Electromechanical transducer film and method for manufacturing electromechanical transducer film (2013-04-23),
9. 7794643 - Apparatus and method for molding object with enhanced transferability of transfer face and object made by the same (2010-09-14),

Title: Keiji Ueda: Innovator in Liquid Discharge Technology

Introduction

Keiji Ueda is a prominent inventor based in Kanagawa, Japan. He has made significant contributions to the field of liquid discharge technology, holding a total of 9 patents. His work has been instrumental in advancing the capabilities of liquid discharge heads and related apparatus.

Latest Patents

One of Ueda's latest patents involves a liquid discharge head that includes a nozzle member. This nozzle member comprises a nozzle, a deformable laminar member, and an electromechanical transducer. The nozzle is designed to discharge liquid, while the deformable laminar member features an opening that forms the nozzle. The electromechanical transducer is strategically placed around the opening. Notably, the nozzle member is warped concerning a discharge-side plane when no voltage is applied to the electromechanical transducer. Additionally, Ueda has developed a PZT precursor solution, methods for producing PZT films, electromechanical transducer elements, and liquid discharge heads, utilizing a sol-gel method.

Career Highlights

Keiji Ueda is currently employed at Ricoh Company, Ltd., where he continues to innovate and develop new technologies. His expertise in liquid discharge systems has positioned him as a key figure in the industry.

Collaborations

Ueda has collaborated with notable coworkers, including Yoshikazu Akiyama and Akira Shimofuku. Their combined efforts have contributed to the advancement of technologies in their field.

Conclusion

Keiji Ueda's contributions to liquid discharge technology and his impressive portfolio of patents highlight his role as a leading inventor in this domain. His work continues to influence advancements in the industry, showcasing the importance of innovation in technology.

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