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For the Inventor, By the Inventor

Kanagawa, Japan

Takashi Naito

This inventor holds 9 USPTO granted patents. Top assignee: Sony Corporation. Active years: 1987-1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takashi Naito. Retrieved from https://idiyas.com/inventor/takashi-naito-a3lc83p9

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

Calculating rank
USPTO Granted Patents = 9

% Patents Active = 100.0

Average Co-Inventor Count = 2.3

ph-index = 5

Forward Citations = 84(Granted Patents)


Location History:

  • Shinagawa, JP (1988)
  • Kanagawa, JP (1987 - 1999)

Company Filing History:

goldMedal9 out of 58,148 
 
Sony Corporation
 patents

Years Active: 1987-1999

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9 patents (USPTO):Explore Patents
1. 5867477 - Optical disk with snap-fit magnetized hub (1999-02-02),
2. 5859831 - Disk cartridge (1999-01-12),
3. 5355121 - Alarm device for magneto-optical disc drive unit (1994-10-11),
4. 5258971 - Optical disc drive with interconnecting hoods (1993-11-02),
5. 5128923 - Disc cartridge for cleaning an objective lens (1992-07-07),
6. 4785444 - Optical recording disc (1988-11-15),
7. 4751694 - Compact optical disk player including non-orthogonal optical paths (1988-06-14),
8. 4748606 - External magnetic field inverting apparatus for magneto-optical disc (1988-05-31),
9. 4653039 - Disc player (1987-03-24),

Title: Takashi Naito: Innovator in Optical Disk Technology

Introduction

Takashi Naito is a prominent inventor based in Kanagawa, Japan. He has made significant contributions to the field of optical disk technology, holding a total of 9 patents. His innovative designs have improved the functionality and usability of optical disks, making them more efficient and user-friendly.

Latest Patents

One of Naito's latest patents is for an optical disk with a snap-fit magnetized hub. This design features a hub that is easy to attach and detach, enhancing user convenience. The hub includes a bottom and a cylindrical wall that projects upwards, which is inserted into the center hole of the optical disk. The cylindrical wall is slotted, allowing the upper end to bend radially inwards for easy removal. Additionally, the hub has stoppers that abut the lower surface of the optical disk and claws that engage the upper surface, ensuring a secure fit.

Another notable patent is for a disk cartridge that houses an overwritable magneto-optical disk. This cartridge is designed to be compatible with disk drives that also accept conventional, non-overwritable disks. It includes a magnetic initializing device within the cartridge casing, generating a sufficient magnetic field for overwrite operations. This innovation reduces the need for such devices in disk drives, thereby decreasing their size, weight, and cost while improving cartridge performance.

Career Highlights

Takashi Naito is currently employed at Sony Corporation, where he continues to develop cutting-edge technologies in optical disks. His work has been instrumental in advancing the capabilities of optical storage media, making them more versatile and efficient.

Collaborations

Throughout his career, Naito has collaborated with notable colleagues, including Susumu Tosaka and Keiji Maruta. These partnerships have fostered a creative environment that has led to numerous innovations in the field.

Conclusion

In summary, Takashi Naito is a key figure in the realm of optical disk technology, with a strong portfolio of patents that reflect his innovative spirit. His contributions have significantly impacted the industry, enhancing the functionality and usability of optical disks.

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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