Tokyo, Japan

Hirohito Nakajima

This inventor holds 2 USPTO granted patents and 3 published patent applications. Top assignees: Hitachi, Ltd., Lixil Corporation, Nippon Telegraph and Telephone Public Corporation. Active years: 1985-2024.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hirohito Nakajima. Retrieved from https://idiyas.com/inventor/hirohito-nakajima-cfjq8kqy

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

Calculating rank
USPTO Granted Patents = 2 

% Patents Active = 100.0

Average Co-Inventor Count = 5.7

ph-index = 1

Forward Citations = 182(Granted Patents)


Company Filing History:


Years Active: 1985-2024

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2 patents (USPTO):Explore Patents

Title: Hirohito Nakajima: Innovator in Active Carbon Technology and Video/Audio Transmission Systems

Introduction

Hirohito Nakajima is a notable inventor based in Tokyo, Japan. He has made significant contributions to the fields of active carbon technology and video/audio transmission systems. With a total of two patents to his name, Nakajima's work reflects a commitment to innovation and efficiency.

Latest Patents

One of Nakajima's latest patents is the "Active Carbon Molded Body." This invention comprises a plurality of active carbon granules formed from aggregates of active carbon particles. The granules include a fibrous granulation binder, allowing for the aggregation of the granules without the need for a separate molding binder. This method results in an active carbon molded body that boasts high purification capacity and good production efficiency.

Another significant patent is the "Buffer Memory Dispersion Type Video/Audio Transmission System." This system is designed to transmit video and audio information from a central location to subscribers through their junction lines. By utilizing a video/audio buffer memory and strategically placed sub-centers, Nakajima's invention reduces the number of repeaters needed on the subscriber's junction line, enhancing the efficiency of video and audio transmission.

Career Highlights

Hirohito Nakajima has worked with prominent companies such as Hitachi, Ltd. and Nippon Telegraph and Telephone Public Corporation. His experience in these organizations has contributed to his expertise in developing innovative technologies.

Collaborations

Throughout his career, Nakajima has collaborated with notable individuals, including Katsumi Haji and Yoji Shibata. These partnerships have likely played a role in the successful development of his inventions.

Conclusion

Hirohito Nakajima's contributions to active carbon technology and video/audio transmission systems highlight his innovative spirit and dedication to improving efficiency in these fields. His patents reflect a deep understanding of the technical challenges and opportunities within these industries.

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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