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For the Inventor, By the Inventor

Tokyo, Japan

Atsushi Hiraishi

This inventor holds 50 USPTO granted patents and 4 published patent applications, primarily in Semiconductor Devices (CPC class G11C). Top assignees: Hitachi, Ltd., Elpida Memory, Inc., Micron Technology Incorporated. Active years: 1987-2020.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Atsushi Hiraishi. Retrieved from https://idiyas.com/inventor/atsushi-hiraishi

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

Calculating rank
USPTO Granted Patents = 50 

% Patents Active = 92.0

Average Co-Inventor Count = 4.3

ph-index = 12

Forward Citations = 627(Granted Patents)

Forward Citations (Not Self Cited) = 619(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Hitachi, JP (1987 - 1998)
  • Ohme, JP (1993 - 1998)
  • Oume, JP (1995 - 1998)
  • Kodaira, JP (1998 - 2001)
  • Chuo-ku, JP (2011)
  • Tokyo, JP (2008 - 2017)
  • Sagamihara, JP (2016 - 2017)
  • Gunma, JP (2017)
  • Annaka, JP (2018 - 2020)

Company Filing History:

goldMedal29 out of 42,743 
 
Hitachi, Ltd.
 patents
silverMedal9 out of 1,458 
 
Elpida Memory, Inc.
 patents
bronzeMedal7 out of 39,294 
 
Micron Technology Incorporated
 patents
4. 3 out of 377 
 
Ps4 Luxco S.a.r.l.
 patents
5. 2 out of 87 
 
Hitachi Ulsi Engineering Corp.
 patents
6. 1 out of 52 
 
Longitude Semiconductor S.a.r.l.
 patents
7. 1 out of 834,601 
Other
 patents
where one patent can have more than one assignee

Years Active: 1987-2020

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Areas of Expertise:
Semiconductor Devices
Memory Modules
Integrated Circuits
Timing Control
Silicon Interposer
Stacked-Type Package
Output Buffers
Wiring Board
Signal Transmission
Synchronous Memory
Load Reduced Memory
Redundancy Capability
50 patents (USPTO):Explore Patents
1. 10720201 - Timing control for input receiver (2020-07-21),
2. 10410712 - Timing control for input receiver (2019-09-10),
3. 10049722 - Apparatuses and methods for a memory device with dual common data I/O lines (2018-08-14),
4. 9984740 - Timing control for input receiver (2018-05-29),
5. 9837137 - Semiconductor device (2017-12-05),
6. 9805786 - Apparatuses and methods for a memory device with dual common data I/O lines (2017-10-31),
7. 9570375 - Semiconductor device having silicon interposer on which semiconductor chip is mounted (2017-02-14),
8. 9368185 - Semiconductor device (2016-06-14),
9. 9076500 - Memory module including plural memory devices and data register buffer (2015-07-07),
10. 8988952 - Semiconductor device having ODT function (2015-03-24),
11. 8922029 - Apparatus having a wiring board and memory devices (2014-12-30),
12. 8422263 - Load reduced memory module and memory system including the same (2013-04-16),
13. 8198549 - Multi-layer printed wiring board (2012-06-12),
14. 8134239 - Address line wiring structure and printed wiring board having same (2012-03-13),
15. 8064236 - Memory module, method for using same and memory system (2011-11-22),

Title: **Atsushi Hiraishi: Innovator in Semiconductor Technology**

Introduction

Atsushi Hiraishi is a prominent inventor based in Tokyo, Japan, known for his significant contributions to semiconductor technology. With a remarkable portfolio of 50 patents, Hiraishi has made a notable impact in the industry, particularly through his innovative approaches to input signal processing.

Latest Patents

Among Hiraishi's latest inventions is a patent focused on timing control for input receivers. This technology revolves around apparatuses designed to receive input signals in semiconductor devices. The innovative apparatus includes a signal receiver, which captures information signals, and a control circuit that generates multiple control signals. Additionally, it features a signal receiver replica circuit that processes a first reference signal through a plurality of receivers. Each receiver takes in the reference signal along with its corresponding control signal to produce an output signal, highlighting Hiraishi's ability to blend complex circuitry with practical applications.

Career Highlights

Hiraishi has worked with notable companies in the semiconductor field, including Hitachi, Ltd. and Elpida Memory, Inc. His experiences in these companies reflect his dedication to advancing technology and enhancing the efficiency of semiconductor devices. His work has been instrumental in pushing boundaries and fostering innovation in a competitive market.

Collaborations

Throughout his career, Hiraishi has had the opportunity to collaborate with talented individuals in the industry. Among his notable coworkers are Yutaka Kobayashi and Toshio Sugano, both of whom have contributed to the development of cutting-edge technologies in semiconductor engineering. Their teamwork has undoubtedly enriched the projects they have undertaken together.

Conclusion

Atsushi Hiraishi stands out as an influential figure in semiconductor innovation. With a solid patent portfolio and a commitment to advancing technology, he continues to inspire future generations of inventors and engineers. As his work in timing control for input receivers demonstrates, his contributions significantly enhance the functionality and efficiency of semiconductor devices, ensuring his place in the annals of technological advancement.

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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