This inventor holds 1 USPTO granted patent. Top assignee: Mitsumi Electric Company Ltd.. Active years: 2002.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2002
Title: Hisakazu Hironaka and Disk-Formatting Innovation.
Introduction
Hisakazu Hironaka is an inventor associated with Isehara, Japan, and Mitsumi Electric Company Ltd. His recorded patent work concerns the organization and formatting of disk-shaped recording media.
Latest Patents
The available information lists one patent for Hironaka: “Disk-shaped recording medium and formatting method thereof wherein historic information including a storage capacity of the disk-shaped recording medium is recorded thereon.” The invention describes a large-capacity floppy disk with concentric tracks divided into sectors, each containing servo and data fields. Its formatting method provides for sector and track numbering, skips defective sectors when assigning serial sector numbers, and divides tracks into zones. It also describes separating the disk into a user-data area and an alternate area, with an information-identification sector that stores historical information about the medium’s preparation. The record lists 1 patent.
Career Highlights
Hironaka’s listed patent reflects work on disk formatting, defect management, and the recording of historical information about storage media. The available details associate this work with Mitsumi Electric Company Ltd.
Collaborations
The listed coworkers associated with Hironaka are Toshimitsu Itoh and Hidetsugu Touji.
Conclusion
Hisakazu Hironaka’s recorded invention addresses practical aspects of large-capacity disk design, including sector organization, defective-sector handling, and the preservation of disk-formatting information.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile