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For the Inventor, By the Inventor

Tokyo, Japan

Toshikazu Nakajima

This inventor holds 9 USPTO granted patents and 3 published patent applications. Top assignees: Nec Corporation, Oki Electric Industry Co., Ltd., Ship Research Institute. Active years: 2000-2005.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshikazu Nakajima. Retrieved from https://idiyas.com/inventor/toshikazu-nakajima

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 = 88.9

Average Co-Inventor Count = 1.5

ph-index = 6

Forward Citations = 148(Granted Patents)


Company Filing History:

goldMedal5 out of 36,684 
 
Nec Corporation
 patents
silverMedal3 out of 4,980 
 
Oki Electric Industry Co., Ltd.
 patents
bronzeMedal1 out of 1 
 
Ship Research Institute
 patent
4. 1 out of 193 
 
Toshiba Corporation
 patents
5. 1 out of 834,513 
Other
 patents
where one patent can have more than one assignee

Years Active: 2000-2005

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9 patents (USPTO):Explore Patents
1. 6944441 - Operation method of portable phone to change mode using dial key and apparatus for the same (2005-09-13),
2. 6909756 - Transmitter and distortion compensation method to be used therefor (2005-06-21),
3. 6798845 - Transmitter for mobile terminal with carrier leak suppressing circuit (2004-09-28),
4. 6369649 - Transmission power amplification method and apparatus (2002-04-09),
5. 6366975 - Large-scale integrated circuit (LSI) circuit for controlling electronic device including LSI, and method of controlling the circuit (2002-04-02),
6. 6282487 - Runway reservation system (2001-08-28),
7. 6085145 - Aircraft control system (2000-07-04),
8. 6064939 - Individual guidance system for aircraft in an approach control area (2000-05-16),
9. 6020831 - Flight control system user interface apparatus and control data display (2000-02-01),

Title: The Innovations of Toshikazu Nakajima

Introduction

Toshikazu Nakajima is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of telecommunications, holding a total of 9 patents. His work has focused on enhancing the functionality and efficiency of portable communication devices.

Latest Patents

Among his latest innovations is an operation method for portable phones that allows users to change modes using dial keys. This invention includes a processing unit that determines whether a dial key operated in a first mode is one of the unspecific keys. When it is, the device changes its operation mode to a second mode, facilitating a more user-friendly experience. Additionally, Nakajima has developed a transmitter and distortion compensation method that minimizes circuit size and current consumption while effectively correcting distortion components in transmission signals.

Career Highlights

Throughout his career, Nakajima has worked with notable companies such as NEC Corporation and Oki Electric Industry Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking technologies in the telecommunications sector.

Collaborations

He has collaborated with esteemed colleagues, including Masao Nishida and Yasuhiro Taka, to further advance his innovative projects. Their combined expertise has played a crucial role in the development of several of Nakajima's patents.

Conclusion

Toshikazu Nakajima's contributions to the field of telecommunications are noteworthy, with his innovative patents enhancing the functionality of portable devices. His work continues to influence the industry and pave the way for future advancements.

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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