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For the Inventor, By the Inventor

Mishima, Japan

Yasuhito Kiji

This inventor holds 20 USPTO granted patents and 7 published patent applications and 3 EPO patents, primarily in Inkjet Technology. Top assignees: Toshiba Tec Kabushiki Kaisha, Riso Technologies Corporation. Active years: 2006-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasuhito Kiji. Retrieved from https://idiyas.com/inventor/yasuhito-kiji

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

USPTO Granted Patents = 20 

% Patents Active = 50.0

 

Average Co-Inventor Count = 2.0

ph-index = 4

Forward Citations = 71(Granted Patents)


Location History:

  • Shinagawa-ku, JP (2007)
  • Shizuoka-ken, JP (2006 - 2008)
  • Mishima, JP (2008 - 2013)
  • Shizuoka, JP (2017)
  • Mishima Shizuoka, JP (2019 - 2021)

Company Filing History:

goldMedal16 out of 6,290 
 
Toshiba Tec Kabushiki Kaisha
 patents
silverMedal4 out of 25 
 
Riso Technologies Corporation
 patents

Years Active: 2006-2026

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Areas of Expertise:
Inkjet Head
Liquid Ejection
Printing Device
RFID Tag
Drive Apparatus
Tag Issuing
Registration System
Commodity Information
Article Management
Composite Antenna
Reading/Writing Apparatus
Tag Reading
20 patents (USPTO):Explore Patents
1. 12679086 - Liquid ejection head (2026-07-14),
2. 12673491 - Liquid ejection head (2026-07-07),
3. 12552160 - Liquid ejection head and printing device (2026-02-17),
4. 12179483 - Liquid ejection head (2024-12-31),
5. 11014353 - Ink jet head and ink jet recording apparatus (2021-05-25),
6. 10632745 - Inkjet head and inkjet recording apparatus (2020-04-28),
7. 10239313 - Inkjet head drive apparatus (2019-03-26),
8. 10166768 - Ink jet head drive device (2019-01-01),
9. 9815279 - Inkjet head drive apparatus (2017-11-14),
10. RE44631 - Radio tag issuing apparatus and tag issuing method (2013-12-09),
11. 7690568 - Tag reading apparatus (2010-04-06),
12. 7527197 - Commodity sales registration processing system and commodity information registering apparatus (2009-05-05),
13. 7527196 - Commodity sales registration processing system and commodity information registering apparatus (2009-05-05),
14. 7439865 - Radio tag issuing apparatus (2008-10-21),
15. 7413122 - Commodity information registering apparatus and commodity information registering method (2008-08-19),

Title: The Innovative Contributions of Yasuhito Kiji

Introduction

Yasuhito Kiji is a prominent inventor based in Mishima, Shizuoka, Japan. He has made significant contributions to the field of liquid ejection technology, holding a total of 17 patents. His work has advanced the capabilities of inkjet printing and related technologies.

Latest Patents

One of Kiji's latest patents is for a liquid ejection head. This invention includes a nozzle plate, pressure chambers, actuators, and a drive circuit. The nozzle plate features nozzles for ejecting liquid, while the pressure chamber communicates with these nozzles. The actuator adjusts the volume of the pressure chamber based on a drive signal generated by the drive circuit. This drive signal includes an ejection waveform designed to cancel vibrations at specific acoustic resonance frequencies.

Another notable patent is for an inkjet head and inkjet recording apparatus. This invention consists of a pressure chamber, an actuator, and an application unit. The pressure chamber holds liquid, and the actuator modifies the chamber's volume in response to a drive signal. The application unit sends this signal to the actuator, which includes both discharge and vibration pulses. The timing and characteristics of these pulses are carefully designed to optimize liquid discharge from the nozzle.

Career Highlights

Throughout his career, Yasuhito Kiji has worked with notable companies such as Toshiba Tec and Riso Technologies Corporation.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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