Mitsumasa Kubo

This inventor holds 24 USPTO granted patents, primarily in Optical Disk Technology. Top assignees: Teac Corporation, Mitsubishi Denki Kabushiki Kaisha. Active years: 1988-2013.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Mitsumasa Kubo. Retrieved from https://idiyas.com/inventor/mitsumasa-kubo

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

USPTO Granted Patents = 24

% Patents Active = 70.8

Average Co-Inventor Count = 2.2

ph-index = 9

Forward Citations = 200(Granted Patents)

Location History:

Iruma, JP (1988 - 1990)
Musashino, JP (1994 - 1997)
Kodaira, JP (1996 - 1997)
Tokyo, JP (1996 - 2011)
Tachikawa, JP (1998 - 2013)

Company Filing History:

Mitsubishi Denki Kabushiki Kaisha

patents

where one patent can have more than one assignee

Years Active: 1988-2013

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Areas of Expertise:

Optical Disk

Data Encryption

Disk Inspection

Data Recovery

Focusing Servo

CD-ROM Quality

Motor Speed Control

Reproducing Device

Digital Conversion

Address Mark Detection

24 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 8531931 - Optical disk inspecting apparatus and method (2013-09-10),

2. 8261097 - Data recorder having data encryption function and data reproducing device (2012-09-04),

3. 8036075 - Disk drive and information processing system having the same (2011-10-11),

4. 8009537 - Disk inspection apparatus (2011-08-30),

5. 7050374 - Optical disk apparatus (2006-05-23),

6. 7050363 - Optical disk device (2006-05-23),

7. 6721248 - Optical disk unit (2004-04-13),

8. 6687207 - Optical recording apparatus for recording information on a write-once disk or an erasable optical disk (2004-02-03),

9. 6313601 - Speed control of a motor (2001-11-06),

10. 6301212 - Focusing and tracking servo circuit in an optical disk device (2001-10-09),

11. 6236630 - Method and apparatus for checking the quality of CD-ROMS or the like for reading them at matching speeds (2001-05-22),

12. 6044052 - Method and apparatus for high speed data recovery from CD-ROMs or like (2000-03-28),

13. 5982725 - Method and apparatus for checking the quality of CD-ROMs or the like for (1999-11-09),

14. 5963520 - Method and apparatus for high speed data recovery from CD-ROMS or like (1999-10-05),

15. 5862113 - Method and apparatus for wobble-free data recovery from CD-rom or the (1999-01-19),

Title: Mitsumasa Kubo: Innovator in Optical Data Technologies

Introduction

Mitsumasa Kubo, an accomplished inventor based in Tachikawa, Japan, has made significant contributions to the field of optical data technologies. With a total of 24 patents to his name, Kubo has established himself as a prominent figure in the industry, focusing on innovations that enhance data recording and reproduction.

Latest Patents

Among Kubo's latest innovations are two notable patents:

1. **Optical Disk Inspecting Apparatus and Method** - This sophisticated apparatus plays an optical disk at high speed and evaluates error information during reproduction. If errors exceed a predetermined threshold, the system performs both high-speed and low-speed determinations to identify defects, ensuring high-quality performance for optical disks.

2. **Data Recorder Having Data Encryption Function and Data Reproducing Device** - This device enhances security for portable recording media by implementing dual operational modes: security and normal. In the security mode, a unique identification signal is recorded outside the user data area, preventing unauthorized copying and ensuring secure data access through password protection.

Career Highlights

Throughout his career, Mitsumasa Kubo has worked with leading companies including Teac Corporation and Mitsubishi Denki Kabushiki Kaisha. His experience at these organizations has fueled his inventive spirit, allowing him to develop groundbreaking technologies that reshape the optical data landscape.

Collaborations

Kubo has collaborated with talented individuals such as Akira Mashimo and Masashi Tanaka. These partnerships have proven instrumental in creating innovative solutions that address the evolving demands of data storage and reproduction technology.

Conclusion

Mitsumasa Kubo is a notable innovator whose contributions to optical data technologies are marked by 24 patents and numerous collaborative endeavors. His latest inventions continue to set benchmarks in the industry, showcasing a commitment to enhancing data security and reliability in optical media.

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]