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Tokushima, Japan

Justsystem Corporation

USPTO Granted Patents = 35

% Expired Patents = 14.3

CIPO Patents = 1

Forward Citations = 1,790

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38 inventors (with patents filed for the assignee):

Kazunori Ukigawa (7 out of 7 patents)

Hiroki Yamashita (6 out of 6 patents)

Nobuhide Yamazaki (5 out of 18 patents)

4. Mark Kantrowitz (5 out of 7 patents)

5. Rahul Sukthankar (3 out of 8 patents)

6. Matthew Mullin (3 out of 3 patents)

7. Mami Uchida (2 out of 16 patents)

8. Michael John Witbrock (2 out of 7 patents)

9. Tatsuo Kobayashi (2 out of 3 patents)

10. Natsuko Yotsumoto (2 out of 2 patents)

11. Masahiro Asai (2 out of 15 patents)

12. Takaaki Miura (2 out of 2 patents)

13. Katsuhisa Takata (2 out of 2 patents)

14. Akira Yamada (2 out of 2 patents)

15. Robert Stockton (2 out of 2 patents)

Core Competencies:

Account Settlement

Information Server

Document Summaries

Voice Generation

Text Analysis

Neural Networks

Online Commodity Management

Biometric Authentication

Projector-Camera Calibration

Language Identification

Emotion Analysis

Keystone Correction

35 patents: Sort by Forward Citations

1. 7778922 - Account settlement method in online shopping (2010-08-17),

2. 7742983 - Account settlement method in online shopping (2010-06-22),

3. 7603686 - Information processing method and apparatus and recording medium (2009-10-13),

4. 7457850 - Information server system (2008-11-25),

5. 7337228 - Information processing method and apparatus and recording medium for controlling and simplifying a sign-up operation of an apparatus over a network (2008-02-26),

6. 7003361 - Design support apparatus, design support method, and program (2006-02-21),

7. 6978419 - Method and apparatus for efficient identification of duplicate and near-duplicate documents and text spans using high-discriminability text fragments (2005-12-20),

8. 6938098 - Method for providing digital contents with offering access incentive (2005-08-30),

9. 6877024 - Network system and method for providing voice information to participants in a chat session set at an audible level corresponding to the number of participants currently logged in the chat session (2005-04-05),

10. 6779018 - Counted time period certifying system (2004-08-17),

11. 6753907 - Method and apparatus for automatic keystone correction (2004-06-22),

12. 6704447 - Method and apparatus for using illumination from a display for computer vision based user interfaces and biometric authentication (2004-03-09),

13. 6622140 - Method and apparatus for analyzing affect and emotion in text (2003-09-16),

14. 6618697 - Method for rule-based correction of spelling and grammar errors (2003-09-09),

15. 6618076 - Method and apparatus for calibrating projector-camera system (2003-09-09),

Company Overview

Justsystem Corporation is a prominent technology company based in Tokushima, Japan, specializing in software development and digital solutions. The organization is known for its innovative contributions to text processing, document management, and enterprise software, catering to a diverse range of industries. With a focus on enhancing productivity and efficiency, Justsystem leverages advanced technologies to deliver robust applications that support business operations and improve user experiences across various platforms.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

35 Patents

#6 in Tokushima

#2,128 in Japan

#19,148 in the World

Tokushima, Japan

Justsystem Corporation

Forward Citations = 1,790

38 inventors:

Kazunori Ukigawa (7 out of 7 patents)

Hiroki Yamashita (6 out of 6 patents)

Nobuhide Yamazaki (5 out of 18 patents)

4. Mark Kantrowitz (5 out of 7 patents)

5. Rahul Sukthankar (3 out of 8 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Justsystem Corporation. Retrieved from https://idiyas.com/company/justsystem

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

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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