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For the Inventor, By the Inventor

Kawasaki, Japan

Junichi Ichihara

This inventor holds 5 USPTO granted patents. Top assignee: Fujitsu Corporation. Active years: 1989-2004.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Junichi Ichihara. Retrieved from https://idiyas.com/inventor/junichi-ichihara

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

USPTO Granted Patents = 5

% Patents Active = 100.0

Average Co-Inventor Count = 1.6

ph-index = 3

Forward Citations = 36(Granted Patents)


Location History:

  • Yokohama, JP (1989)
  • Kawasaki, JP (1995 - 2004)

Company Filing History:

goldMedal5 out of 39,374 
 
Fujitsu Corporation
 patents

Years Active: 1989-2004

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5 patents (USPTO):Explore Patents
1. 6683839 - Storage apparatus offering improved precision in positioning carriage relative to disk (2004-01-27),
2. 6052357 - Compact optical disk apparatus having a swing-motion optical head (2000-04-18),
3. 5432663 - Head positioner having pivotable members (1995-07-11),
4. 5404368 - Semiconductor optical apparatus having an improved precision for the (1995-04-04),
5. 4890178 - Magnetic bias coil for a magneto-optical recording apparatus (1989-12-26),

Title: Junichi Ichihara: Innovator in Optical Disk Technology

Introduction

Junichi Ichihara is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of optical disk technology, holding a total of 5 patents. His work focuses on improving the precision and efficiency of storage apparatuses, particularly in optical disk drives.

Latest Patents

Ichihara's latest patents include a storage apparatus that offers improved precision in positioning a carriage relative to a disk. This innovative storage apparatus features a high resonant frequency of carriage driving coils, which enhances the precision of carriage positioning. The design includes rails laid parallel to one radius of the disk, allowing for effective data reading and writing. The driving coils are uniquely shaped to increase rigidity and improve positioning accuracy.

Another notable patent is for a compact optical disk apparatus that utilizes a swing-motion optical head. This apparatus includes a spindle motor for rotating the optical disk and a swing-motion type optical head that scans the disk radially. The design allows the objective lens to move efficiently, enhancing the overall functionality of the optical disk apparatus.

Career Highlights

Ichihara is currently employed at Fujitsu Corporation, where he continues to innovate in the field of optical technology. His work has been instrumental in advancing the capabilities of optical disk drives, making them more efficient and reliable.

Collaborations

Ichihara has collaborated with notable coworkers, including Akihiko Makita and Koichi Ogawa. Their combined expertise has contributed to the development of cutting-edge technologies in the optical disk sector.

Conclusion

Junichi Ichihara's contributions to optical disk technology have significantly impacted the industry. His innovative patents reflect his commitment to enhancing storage solutions and improving data access methods. His work continues to inspire advancements in optical technology.

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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