Osaka, Japan

Seitaro Hamano

This inventor holds 3 USPTO granted patents. Top assignee: Daicel Chemical Industries, Ltd.. Active years: 1987-1993.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Seitaro Hamano. Retrieved from https://idiyas.com/inventor/seitaro-hamano

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 4.6

ph-index = 2

Forward Citations = 13(Granted Patents)


Location History:

  • Niigata, JP (1987)
  • Osaka, JP (1992 - 1993)

Company Filing History:


Years Active: 1987-1993

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3 patents (USPTO):Explore Patents

Title: Seitaro Hamano: Innovator in Optical Disk Technology

Introduction

Seitaro Hamano is a notable inventor based in Osaka, Japan. He has made significant contributions to the field of optical disk technology, holding a total of 3 patents. His innovative designs focus on improving the functionality and reliability of optical disk cartridges.

Latest Patents

One of Hamano's latest patents is a structure for preventing the dislocation of a spring in an optical disk. This invention provides a mechanism wherein a shutter is opened and closed based on the sliding movement of a jig within the cartridge. The design includes spring contacting portions that consist of surfaces extending from a contacting wall, with a projection to prevent spring dislocation. Another patent involves an optical disk storage container and cleaner, which is designed to house a cartridge type optical disk with its shutter opened. This container features a shutter stopper to keep the shutter open and includes a disk rotating jig along with a cleaning device for the disk base.

Career Highlights

Seitaro Hamano is currently employed at Daicel Chemical Industries, Ltd., where he continues to innovate in the field of optical technology. His work has been instrumental in enhancing the design and functionality of optical disk storage solutions.

Collaborations

Throughout his career, Hamano has collaborated with notable colleagues such as Kunihito Kamakura and Seiichi Ohta. Their combined expertise has contributed to the advancement of optical disk technology.

Conclusion

Seitaro Hamano's contributions to optical disk technology through his patents demonstrate his commitment to innovation. His work continues to influence the industry, making significant strides in the functionality and reliability of optical storage solutions.

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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