Shigeki Hirasawa

This inventor holds 32 USPTO granted patents and 3 published patent applications, plus 1 CIPO patent and 4 EPO patents, primarily in Power Management Systems. Top assignees: Hitachi, Ltd., Hitachi Cable, Inc., Hitachi Chemical Company, Ltd.. Active years: 1979-2017.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shigeki Hirasawa. Retrieved from https://idiyas.com/inventor/shigeki-hirasawa

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

USPTO Granted Patents = 32 (Patent Applications = 3)

% Patents Active = 78.1

CIPO Patents = 1 (Patent Applications = 1)

EPO Patents = 4 (Patent Applications = 5)

Average Co-Inventor Count = 5.3

ph-index = 16

Forward Citations = 1,157(Granted Patents)

Location History:

Noda, JP (1979)
Ibaraki, JP (1986 - 1991)
Kawasaki, JP (1994 - 1997)
Ishioka, JP (1993 - 2005)
Sagamihara, JP (1995 - 2005)
Machida, JP (2007 - 2016)
Tokyo, JP (2008 - 2017)

Company Filing History:

Hitachi Chemical Company, Ltd.

patents

where one patent can have more than one assignee

Years Active: 1979-2017

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Areas of Expertise:

Microgrid Control

Electric-Power Management

Single Crystal Production

Temperature Control

Data Processing

Service Providing System

Semiconductor Packaging

Heat Treatment

Cooling Devices

Distributed Processing

Information Transmission

Thermal Management

32 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 9742189 - Microgrid control system (2017-08-22),

2. 9395741 - Electric-power management system, electric-power management method, and section controller (2016-07-19),

3. 7314522 - Apparatus and method for producing single crystal (2008-01-01),

4. 7293294 - Method and apparatus for using contents (2007-11-06),

5. 6857131 - Method and apparatus for displaying an image and data related to the image conditioned on user identifier (2005-02-15),

6. 6847988 - Service providing system and method which divides a request into plural service requests and provides an integrated service based on service utilization history information in response to the request (2005-01-25),

7. 6847113 - Electronic apparatus with plate-like member having plural recesses containing heat accumulating material (2005-01-25),

8. 6792603 - Execution management method of program on reception side of message in distributed processing system (2004-09-14),

9. 6691310 - Information receiver and information transmission and reception method providing information usage status (2004-02-10),

10. 6535921 - Method of sending and receiving information and system using such method (2003-03-18),

11. 6518548 - Substrate temperature control system and method for controlling temperature of substrate (2003-02-11),

12. 6487543 - Media-integrating system, terminal device, recording medium and broadcasting method for use in the media-integrating system (2002-11-26),

13. 6394797 - Substrate temperature control system and method for controlling temperature of substrate (2002-05-28),

14. 6314467 - Method of sending and receiving information and system using such method (2001-11-06),

15. 6282578 - Execution management method of program on reception side of message in distributed processing system (2001-08-28),

Title: Shigeki Hirasawa: Innovator in Microgrid Control Systems

Introduction

Shigeki Hirasawa, a notable inventor based in Sagamihara, Japan, has made significant contributions to the field of energy management through his innovative advancements. With an impressive portfolio of 32 patents, Hirasawa's work focuses on creating efficient and sustainable systems for controlling microgrid facilities.

Latest Patents

Among his latest patents is a groundbreaking microgrid control system, designed to manage multiple power facilities while optimizing for economic efficiency, environmental sustainability, and continuous operability. This system incorporates a power supply activation/suspension planning unit, featuring prediction units that estimate output and load characteristics, along with a unit for predicting potential errors. Another significant invention is an electric-power management system that facilitates effective voltage regulation and power distribution among facility equipment. This system allows section controllers to communicate with area controllers to maintain optimal power supply and demand balance.

Career Highlights

Hirasawa has had a distinguished career with prominent companies such as Hitachi, Ltd. and Hitachi Cable, Inc. His roles in these organizations reflect his dedication to advancing technological solutions in energy management. His extensive research and development efforts have established him as a key figure in the industry, contributing to the evolution of power management technologies.

Collaborations

Throughout his career, Hirasawa has collaborated closely with fellow innovators, including Kinji Mori and Masayuki Orimo. These partnerships have fostered a rich environment for creativity and problem-solving, enabling the development of sophisticated technologies that address modern energy challenges.

Conclusion

Shigeki Hirasawa stands out as a pioneer in the field of microgrid control systems and electric power management. His extensive patent portfolio and collaborative efforts underscore his commitment to fostering innovation in energy technology. As the world increasingly focuses on sustainability and efficient energy use, Hirasawa's contributions remain vital for future advancements.

Profile summary based on public USPTO records.