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For the Inventor, By the Inventor

Chiba, Japan

Takamichi Tomiyama

This inventor holds 8 USPTO granted patents. Top assignee: Sony Corporation. Active years: 1992-1998.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takamichi Tomiyama. Retrieved from https://idiyas.com/inventor/takamichi-tomiyama

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

USPTO Granted Patents = 8

% Patents Active = 100.0

Average Co-Inventor Count = 2.3

ph-index = 6

Forward Citations = 65(Granted Patents)


Location History:

  • Tokyo, JP (1992 - 1994)
  • Chiba, JP (1996 - 1998)

Company Filing History:

goldMedal8 out of 58,145 
 
Sony Corporation
 patents

Years Active: 1992-1998

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8 patents (USPTO):Explore Patents
1. 5805360 - Objective lens drive device (1998-09-08),
2. 5684645 - Lens moving apparatus preventing resonance without using yoke bridge and (1997-11-04),
3. 5657172 - Objective lens driving device (1997-08-12),
4. 5535059 - Objective lens drive device and coil bobbin thereof (1996-07-09),
5. 5521762 - Method for producing an objective lens actuator having elastic supports (1996-05-28),
6. 5500771 - Biaxial actuator for optical pickup (1996-03-19),
7. 5313334 - Objective lens moving actuator (1994-05-17),
8. 5161067 - Objective lens driving apparatus for an optical recording and/or (1992-11-03),

Title: The Innovations of Takamichi Tomiyama

Introduction

Takamichi Tomiyama is a prominent inventor based in Chiba, Japan. He has made significant contributions to the field of optical technology, holding a total of 8 patents. His work primarily focuses on enhancing the efficiency and functionality of optical devices.

Latest Patents

One of his latest innovations is the objective lens drive device. This device can be assembled with high production efficiency, eliminating the need for adhesives to be forced out during assembly. The design features a bi-axial actuator with empty chambers formed by components of the bobbin holder, lens holder, and coil bobbin. The empty chambers are filled with adhesive to bond the coil bobbin to the lens holder, allowing for quick curing without adhesive overflow.

Another notable invention is a lens moving apparatus designed to prevent resonance without using a yoke bridge. This apparatus is utilized in optical pickups for recording and reproducing systems. It includes a moving assembly that holds an objective lens, supported by elastic devices along both the focusing and tracking dimensions. The design ensures that the center of gravity is optimally positioned to balance the forces produced by the focusing coils.

Career Highlights

Takamichi Tomiyama is currently employed at Sony Corporation, where he continues to innovate in optical technologies. His work has significantly impacted the efficiency and performance of optical devices used in various applications.

Collaborations

Throughout his career, Tomiyama has collaborated with notable colleagues, including Koji Mitsumori and Keiichi Shibata. These collaborations have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Takamichi Tomiyama's contributions to optical technology through his innovative patents demonstrate his expertise and commitment to advancing the field. His work continues to influence the design and functionality of optical devices, making a lasting impact on the industry.

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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