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For the Inventor, By the Inventor

Yokohama, Japan

Tadashi Kuwabara

This inventor holds 52 USPTO granted patents, primarily in Semiconductor Devices (CPC class 3651). Top assignees: Hitachi, Ltd., Hitachi Microsoftware Systems, Inc., Hitachi Information Network, Ltd.. Active years: 1984-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tadashi Kuwabara. Retrieved from https://idiyas.com/inventor/tadashi-kuwabara

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

USPTO Granted Patents = 52

% Patents Active = 94.2

Average Co-Inventor Count = 5.6

ph-index = 19

Forward Citations = 1,628(Granted Patents)

Forward Citations (Not Self Cited) = 1,602(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Hitachi, JP (1984 - 1989)
  • Totsuka, JP (1995)
  • Totsuka-ku, JP (2000)
  • Yokohama, JP (1987 - 2011)

Company Filing History:

goldMedal52 out of 42,731 
 
Hitachi, Ltd.
 patents
silverMedal3 out of 10 
 
Hitachi Microsoftware Systems, Inc.
 patents
bronzeMedal1 out of 5 
 
Hitachi Information Network, Ltd.
 patents
4. 1 out of 1,267 
 
Hitachi Koki Co., Ltd.
 patents
5. 1 out of 1 
 
Hitachi Microsofyware Systems, Inc.
 patent
where one patent can have more than one assignee

Years Active: 1984-2011

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Areas of Expertise:
Network Device
Gateway Device
Memory Circuit
Data Transfer System
One Chip Semiconductor
Power Consumption Control
Information Processing
Electronic Mail
Media-Integrating System
Image Display
RAM Control
Electronic Book System
52 patents (USPTO):Explore Patents
1. 7912928 - Network device and network device control method (2011-03-22),
2. 7403982 - Network device and network device control method (2008-07-22),
3. 7339895 - Gateway device and control method for communication with IP and IPV6 protocols (2008-03-04),
4. 6895393 - Electronic book distributing system by use of purchase certificate and devices therefor (2005-05-17),
5. 6857131 - Method and apparatus for displaying an image and data related to the image conditioned on user identifier (2005-02-15),
6. 6643189 - Memory device (2003-11-04),
7. 6535921 - Method of sending and receiving information and system using such method (2003-03-18),
8. 6487543 - Media-integrating system, terminal device, recording medium and broadcasting method for use in the media-integrating system (2002-11-26),
9. 6359812 - Memory device (2002-03-19),
10. 6314467 - Method of sending and receiving information and system using such method (2001-11-06),
11. 6198665 - One chip semiconductor integrated circuit device having two modes of data write operation and bits setting operation (2001-03-06),
12. 6028795 - One chip semiconductor integrated circuit device having two modes of (2000-02-22),
13. 5991798 - Package medium system having URL hyper-linked to data in removable (1999-11-23),
14. 5933478 - Data transfer system and handheld terminal device used therefor (1999-08-03),
15. 5923591 - Memory circuit (1999-07-13),

Title: Innovations by Tadashi Kuwabara: Pioneering Network Device Control

Introduction

Tadashi Kuwabara, residing in Yokohama, Japan, is a prolific inventor recognized for his contributions to the field of network device control. With an impressive portfolio of 52 patents, his work has significantly influenced how devices communicate and operate within interconnected systems.

Latest Patents

One of Kuwabara's notable recent inventions is focused on a network device and network device control method. The objective of this innovation is to facilitate the control of various network devices connected to an IP network, as well as AV devices linked over 1394IF and home devices connected to ECHONET. This invention allows for seamless control without discrimination among different types of devices. The controller within the network device employs a dedicated application to identify services of target devices, utilizing messages compliant with a common information exchange protocol. It gathers essential information, such as access methods, function names, and parameters, enabling effective control upon request. Furthermore, the targeted network device comprises services that provide necessary information to facilitate smooth control operations.

Career Highlights

Throughout his career, Tadashi Kuwabara has worked with reputable companies, including Hitachi, Ltd. and Hitachi Microsoftware Systems, Inc. His expertise not only enhances the technological advancements within these organizations but also contributes to the broader field of network communications.

Collaborations

Kuwabara has worked alongside notable colleagues in the industry, including Hiroaki Aotsu and Koichi Kimura. These collaborations have further propelled innovative developments in networking technologies and device control methods.

Conclusion

Tadashi Kuwabara's relentless pursuit of innovation has not only led to significant advancements in network control technologies but has also positioned him as a prominent figure in the landscape of modern inventions. His contributions, particularly in enabling integrated control systems across various types of devices, continue to shape the future of technology in our interconnected world.

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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