Masanobu Maeshima

This inventor holds 64 USPTO granted patents and 5 published patent applications and 6 EPO patents, primarily in Inkjet Technology (CPC class B41J). Top assignees: Kyocera Document Solutions Inc., Mita Industrial Co., Ltd., Kyocera Mita Corporation. Active years: 1988-2025.

USPTO Granted Patents = 64 (Patent Applications = 5)

% Patents Active = 82.8

EPO Patents = 6 (Patent Applications = 8)

Average Co-Inventor Count = 1.9

ph-index = 12

Forward Citations = 368(Granted Patents)

Forward Citations (Not Self Cited) = 355(Dec 10, 2025)

Inventors with similar research interests:

Location History:

Sakai, JP (1988 - 1993)
Habikino, JP (1992 - 1995)
Kawachinagano, JP (2004)
Osaka, JP (1994 - 2024)

Company Filing History:

28 out of 6,310

Kyocera Document Solutions Inc.

patents

19 out of 1,344

Mita Industrial Co., Ltd.

patents

13 out of 1,131

Kyocera Mita Corporation

patents

4. 3 out of 834,411

Other

patents

where one patent can have more than one assignee

Years Active: 1988-2025

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Areas of Expertise:

Inkjet Recording Apparatus

Image Forming Apparatus

Ink Container

Toner Cartridge

Liquid Leakage Detection

Toner Supply Apparatus

Adjustable Mechanism

Supply Liquid Tank

Coupling Structure

Recording Head

Developer Container

Imaging Apparatus

64 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12304215 - Sub-tank and inkjet recording apparatus (2025-05-20),

2. 11872820 - Liquid leakage detection device including two absorption layers and pair of terminals, and ink jet recording apparatus (2024-01-16),

3. 11760099 - Ink-jet recording apparatus (2023-09-19),

4. D998695 - Toner container (2023-09-12),

5. D990554 - Toner container (2023-06-27),

6. 11654686 - Liquid container, liquid supply device and liquid discharge apparatus (2023-05-23),

7. 11203203 - Connection mechanism for liquid flow path and inkjet recording apparatus (2021-12-21),

8. 11148427 - Coupling structure and image forming apparatus (2021-10-19),

9. 11034156 - Inkjet recording apparatus (2021-06-15),

10. 10946667 - Image forming apparatus and ink container (2021-03-16),

11. 10792929 - Supply liquid tank unit and inkjet recording apparatus therewith (2020-10-06),

12. D890840 - Ink cartridge (2020-07-21),

13. 10556434 - Inkjet recording apparatus (2020-02-11),

14. 10336078 - Recording head and inkjet recording apparatus including same (2019-07-02),

15. 10303089 - Toner case, toner supplying device and image forming apparatus (2019-05-28),

Title: Masanobu Maeshima - Pioneering Inventor from Osaka, JP

Introduction: Masanobu Maeshima is a renowned inventor hailing from Osaka, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Maeshima's latest patents include a revolutionary design for a solar-powered water purification system and a cutting-edge algorithm for enhancing cybersecurity measures in IoT devices.

Career Highlights: With over two decades of experience in the tech industry, Maeshima has worked for leading companies in Japan, spearheading research and development projects that have resulted in numerous patented inventions.

Collaborations: Throughout his career, Maeshima has collaborated with top researchers and engineers in Japan and beyond, fostering a culture of innovation and knowledge-sharing in the tech community.

Conclusion: Masanobu Maeshima's dedication to pushing the boundaries of technology and his passion for creating solutions to real-world problems make him a true visionary in the world of inventions.