Tsutomu Kusaki

This inventor holds 15 USPTO granted patents. Top assignees: Hitachi, Ltd., Hitachi Communication Technologies, Ltd.. Active years: 1998-2010.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tsutomu Kusaki. Retrieved from https://idiyas.com/inventor/tsutomu-kusaki

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

USPTO Granted Patents = 15

% Patents Active = 86.7

Average Co-Inventor Count = 4.0

ph-index = 7

Forward Citations = 215(Granted Patents)

Company Filing History:

Hitachi Communication Technologies, Ltd.

patents

Years Active: 1998-2010

Loading Chart...

15 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7729699 - Switching center for mobile handover (2010-06-01),

2. 7079513 - Communication system (2006-07-18),

3. 6795414 - Communication system (2004-09-21),

4. 6754495 - Handover method in mobile communication system (2004-06-22),

5. 6333977 - Communication method authenticating a personal station and calculating a fee of a telephone call from the personal station (2001-12-25),

6. 6289008 - Communication system (2001-09-11),

7. 6263204 - Switching center for mobile handover (2001-07-17),

8. 6259920 - Handover method in mobile communication system (2001-07-10),

9. 6178165 - Communication system (2001-01-23),

10. 6108546 - Handover method in mobile communication system (2000-08-22),

11. 6049534 - Communication system (2000-04-11),

12. 5991379 - Radio communication system authenticating a personal station and (1999-11-23),

13. 5983107 - Mobile radio communications system (1999-11-09),

14. 5749053 - Mobile communication network and control method thereof (1998-05-05),

15. 5732073 - Slots assignment method for control channel signal in mobile (1998-03-24),

Title: **The Innovations of Tsutomu Kusaki: A Trailblazer in Mobile Communication Technology**

Introduction

Tsutomu Kusaki, an accomplished inventor based in Yokohama, Japan, is known for his significant contributions to mobile communication technology. With a remarkable portfolio that includes 15 patents, Kusaki has been instrumental in advancing the efficiency and reliability of mobile systems.

Latest Patents

Among his latest innovations is a patent for a switching center for mobile handover. This invention enables a non-instantaneous interrupt handover in a mobile communication system that utilizes an ATM-processed transfer path. By allowing mobile stations to transition seamlessly between cells during active communication, Kusaki's design optimizes the mobile experience. The system identifies frames containing the same data transmitted from two base stations, selecting the header information with the lowest error rate for enhanced reliability. Furthermore, his communication system patent includes a control unit, a switch, and a diversity hand-over processing unit that manages multiple communication signals effectively, ensuring a smooth transition from one base station to another.

Career Highlights

Throughout his career, Tsutomu Kusaki has made significant strides within several prestigious companies. He has worked with Hitachi, Ltd. and Hitachi Communication Technologies, Ltd., where he developed advanced technologies that have shaped modern mobile communications. His work on mobile handover processes and switching centers has been recognized as pioneering in the field.

Collaborations

Kusaki has collaborated with notable colleagues, including Kenichi Sakamoto and Masaru Murakami. Together, they have contributed to innovations that continue to influence the evolution of mobile communication technologies.

Conclusion

Tsutomu Kusaki's innovative spirit and dedication to technological advancement have cemented his legacy as a key figure in the realm of mobile communications. His 15 patents serve as evidence of his expertise and commitment to improving connectivity for users worldwide. As the industry evolves, Kusaki's contributions will likely continue to shape the future of communication technologies.

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]