Saitama, Japan

Seiichiro Karita

This inventor holds 125 USPTO granted patents and 2 published patent applications, plus 1 CIPO patent and 7 EPO patents, primarily in Liquid Ejection Technology (CPC class B41J2-175). Top assignees: Canon Kabushiki Kaisha, Canon Aptex. Active years: 1991-2025.

USPTO Granted Patents = 125 

% Patents Active = 84.0


 

Average Co-Inventor Count = 5.1

ph-index = 24

Forward Citations = 2,038(Granted Patents)

Forward Citations (Not Self Cited) = 1,798(Dec 10, 2025)


Inventors with similar research interests:

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Location History:

  • Tokyo, JP (1991)
  • Kanagawa, JP (2003 - 2004)
  • Yokohama, JP (1991 - 2005)
  • Toda, JP (2006 - 2014)
  • Saitama, JP (2011 - 2023)

Company Filing History:


Years Active: 1991-2025

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Areas of Expertise:
Liquid Ejection Head
Liquid Discharge Head
Printing Apparatus
Liquid Ejection Apparatus
Temperature Control
Manufacturing Method
Recording Apparatus
Liquid Supply Device
Liquid Ejection Method
Ink Discharge Failure
Liquid Ejection Substrate
Recording Head
125 patents (USPTO):Explore Patents

Title: Innovations of Seiichiro Karita: A Pioneer in Liquid Ejection Technology

Introduction

Seiichiro Karita, an accomplished inventor based in Saitama, Japan, holds an impressive portfolio of 123 patents. His work primarily focuses on innovations in liquid ejection technology and printing apparatus, contributing significantly to the field and enhancing the capabilities of various devices.

Latest Patents

Among his latest patents are a liquid ejection head and a liquid ejection apparatus, which highlight his innovative approach to fluid dynamics. The liquid ejection head includes an ejection opening and a passage housing an energy generation element. This design ensures efficient communication between the ejection opening and the passage, while a supply passage facilitates the flow of liquid. Additionally, he has developed a printing apparatus aimed at reducing liquid leakage caused by cartridge detachment, featuring a cartridge with a hollow needle designed for optimal connection with the attachment unit.

Career Highlights

Karita has built a remarkable career working with prestigious companies such as Canon and Canon Aptex. His contributions have led to advancements in printer technology, particularly in enhancing the reliability and effectiveness of liquid ejection systems.

Collaborations

Throughout his career, Seiichiro Karita has collaborated with notable professionals, including Takatsuna Aoki and Masami Ikeda. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of expertise, ultimately benefiting the development of new technologies in the printing industry.

Conclusion

Seiichiro Karita’s contributions to liquid ejection technology and printing apparatus innovations have made a lasting impact on the industry. His extensive patent portfolio reflects his dedication to excellence and innovation, positioning him as a significant figure in the realm of inventions. As technology continues to evolve, Karita's work remains influential, paving the way for future advancements in this critical field.

Profile summary based on public USPTO records.
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