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For the Inventor, By the Inventor

Ozu, Japan

Katsushi Hirata

This inventor holds 7 USPTO granted patents. Top assignee: Panasonic Corporation. Active years: 2008-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsushi Hirata. Retrieved from https://idiyas.com/inventor/katsushi-hirata

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

USPTO Granted Patents = 7

% Patents Active = 71.4

Average Co-Inventor Count = 2.6

ph-index = 2

Forward Citations = 11(Granted Patents)


Location History:

  • Oozu, JP (2008)
  • Ehime, JP (2010)
  • Ozu, JP (2009 - 2011)

Company Filing History:

goldMedal7 out of 16,454 
 
Panasonic Corporation
 patents

Years Active: 2008-2011

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7 patents (USPTO):Explore Patents
1. 7947635 - Hydrodynamic bearing device and spindle motor using the same (2011-05-24),
2. 7846883 - Hydrodynamic bearing device, and spindle motor and information device using the same (2010-12-07),
3. 7781383 - Lubricant for fluid dynamic bearing, spindle motor equipped therewith and magnetic disk unit (2010-08-24),
4. 7776802 - Hydrodynamic bearing device, and spindle motor and information device using the same (2010-08-17),
5. 7737095 - Hydrodynamic bearing device, and spindle motor and information device using the same (2010-06-15),
6. 7495863 - Hydrodynamic bearing device, and spindle motor and information device using the same (2009-02-24),
7. 7459416 - Fluid bearing unit and spindle motor using the same (2008-12-02),

Title: Innovations of Katsushi Hirata

Introduction

Katsushi Hirata is a prominent inventor based in Ozu, Japan. He has made significant contributions to the field of engineering, particularly in the development of hydrodynamic bearing devices and spindle motors. With a total of 7 patents to his name, Hirata's work is characterized by its focus on efficiency and reliability.

Latest Patents

Hirata's latest patents include a hydrodynamic bearing device and a spindle motor utilizing this innovative technology. The hydrodynamic bearing device is designed to be low in torque and power consumption while maintaining high reliability, making it ideal for miniaturization. This device features dynamic pressure generation grooves on either the shaft or sleeve, with a lubricant that contains diesters derived from a divalent alcohol with 4 to 8 carbon atoms. Additionally, the lubricant includes one or more types of saturated monovalent fatty acids with 9 to 13 carbon atoms. Another patent focuses on a hydrodynamic bearing device that comprises a shaft structure, a sleeve, and a dynamic pressure-generating groove, with a lubricant that contains a diester with a total carbon number of 20 to 28.

Career Highlights

Hirata is currently employed at Panasonic Corporation, where he continues to innovate and develop new technologies. His work has been instrumental in advancing the capabilities of various devices that rely on hydrodynamic bearings.

Collaborations

Hirata has collaborated with notable colleagues, including Takanori Shiraishi and Hideaki Ohno, contributing to the success of various projects within the company.

Conclusion

Katsushi Hirata's contributions to the field of engineering through his innovative patents and collaborations highlight his importance as an inventor. His work continues to influence the development of efficient and reliable technologies in 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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