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For the Inventor, By the Inventor

Tokyo, Japan

Motomu Hashizume

This inventor holds 9 USPTO granted patents. Top assignee: Texas Instruments Corporation. Active years: 1987-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Motomu Hashizume. Retrieved from https://idiyas.com/inventor/motomu-hashizume

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 = 100.0

Average Co-Inventor Count = 1.8

ph-index = 4

Forward Citations = 23(Granted Patents)


Location History:

  • Ichikawa, JP (1990)
  • Tokyo, JP (1987 - 2011)

Company Filing History:

goldMedal9 out of 29,888 
 
Texas Instruments Corporation
 patents

Years Active: 1987-2011

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9 patents (USPTO):Explore Patents
1. 7961418 - Resistivity sense bias circuits and methods of operating the same (2011-06-14),
2. 7715136 - Hard disk drive preamplifier with reduced pin count (2010-05-11),
3. 7639442 - Methods and apparatus to perform hard-disk drive head proximity detection in a preamplifier (2009-12-29),
4. 7362530 - Amplifier apparatus for use with a sensor (2008-04-22),
5. 7251091 - Current-sense bias circuit for a magnetoresistive head and method of sensing a current therethrough (2007-07-31),
6. 7184232 - Apparatus and method for driving a write head (2007-02-27),
7. 7113359 - Impedance-controlled write driver for low power preamp (2006-09-26),
8. 4958158 - Modem with noise-reducing decoder in demodulation of encoded binary (1990-09-18),
9. 4646265 - Serial ROM devices (1987-02-24),

Title: Motomu Hashizume: Innovator in Magnetic Technologies

Introduction

Motomu Hashizume is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of magnetic technologies, holding a total of 9 patents. His work primarily focuses on enhancing the performance and efficiency of data storage devices.

Latest Patents

One of his latest patents is titled "Resistivity sense bias circuits and methods of operating the same." This patent describes a resistivity sense bias circuit designed for use with a magnetoresistive read head. The circuit includes a current biasing portion that provides a bias current across the read head, establishing a bias voltage. Additionally, it features a resistivity sensing portion that detects changes in the bias current based on resistivity changes in the read head. A voltage source is also included to adjust the bias voltage in response to these changes.

Another notable patent is the "Hard disk drive preamplifier with reduced pin count." This invention involves a disk drive controller that integrates a preamplifier and a controller. It allows for communication between the controller and the preamplifier over shared terminals and conductors. The design includes differential lines for data communication, enabling simultaneous data writing and reading.

Career Highlights

Motomu Hashizume is currently employed at Texas Instruments Corporation, where he continues to innovate in the field of electronics and data storage technologies. His work has significantly impacted the efficiency and functionality of hard disk drives.

Collaborations

He collaborates with Naoko Jinguji, contributing to various projects and advancements in their field.

Conclusion

Motomu Hashizume's contributions to magnetic technologies and data storage are noteworthy. His innovative patents reflect his expertise and commitment to advancing technology. His work continues to influence the industry and pave the way for future developments.

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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