Kohji Serizawa

This inventor holds 9 USPTO granted patents. Top assignees: International Business Machines Corporation, Hitachi Global Storage Technologies Netherlands B.v.. Active years: 1998-2009.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kohji Serizawa. Retrieved from https://idiyas.com/inventor/kohji-serizawa

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

USPTO Granted Patents = 9

% Patents Active = 55.6

Average Co-Inventor Count = 2.9

ph-index = 5

Forward Citations = 73(Granted Patents)

Location History:

Zama, JP (2000)
Yokohama, JP (2003 - 2004)
Kanagawa, JP (1998 - 2009)

Company Filing History:

5 out of 166,351

International Business Machines Corporation

patents

4 out of 2,636

Hitachi Global Storage Technologies Netherlands B.v.

patents

Years Active: 1998-2009

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9 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7573671 - Disk device with reduced flutter (2009-08-11),

2. 7545599 - Disk drive with vibration suppression member disposed near head assembly (2009-06-09),

3. 6690540 - Disk drive damper having a thin portion and a plurality of thick portions (2004-02-10),

4. 6657812 - Disk drive including a dust catching chamber and an associated gasket portion (2003-12-02),

5. 6633452 - Disk drive apparatus, hard disk drive, and enclosure for hard disk drive (2003-10-14),

6. 6594099 - Apparatus for erasing data stored on a magnetic disk (2003-07-15),

7. 6137658 - Apparatus for guiding and locking a rotary actuator (2000-10-24),

8. 6067209 - Disk drive device with shock resistance flexure and ramp limited system (2000-05-23),

9. 5818657 - Disk drive with impulse torque generating element (1998-10-06),

Title: Kohji Serizawa: Innovator in Disk Drive Technology

Introduction

Kohji Serizawa is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of disk drive technology, holding a total of 9 patents. His innovative designs focus on enhancing the performance and reliability of disk devices.

Latest Patents

One of Serizawa's latest patents is for a disk device with reduced flutter. This invention aims to diminish oscillation of a disk caused by airflow during rotation. The design includes a rotatable magnetic disk, a base, and a top cover, along with a flow uniforming wall and a circulation filter to collect dust. Another significant patent is for a disk drive with a vibration suppression member. This invention addresses surface deformation of the top cover by incorporating a vibration suppression member in a polygonal arrangement, strategically placed to minimize vibration effects.

Career Highlights

Throughout his career, Kohji Serizawa has worked with prominent companies such as IBM and Hitachi Global Storage Technologies. His experience in these organizations has allowed him to develop and refine his innovative ideas in disk drive technology.

Collaborations

Serizawa has collaborated with notable coworkers, including Mutsuro Ohta and Yoshihiro Hirasaka. Their combined expertise has contributed to the advancement of technology in their field.

Conclusion

Kohji Serizawa's contributions to disk drive technology through his patents and collaborations highlight his role as an influential inventor. His work continues to impact the industry positively.

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]