Tokyo, Japan

Masanori Tsujikawa

This inventor holds 31 USPTO granted patents and 56 published patent applications, primarily in Speech Processing Technology. Top assignees: Nec Corporation, Daikin Industries, Ltd.. Active years: 2011-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masanori Tsujikawa. Retrieved from https://idiyas.com/inventor/masanori-tsujikawa

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

USPTO Granted Patents = 31 

% Patents Active = 74.2

Average Co-Inventor Count = 2.2

ph-index = 4

Forward Citations = 41(Granted Patents)


Location History:

  • Minato-ku, JP (2014 - 2016)
  • Tokyo, JP (2011 - 2024)

Company Filing History:


Years Active: 2011-2026

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Areas of Expertise:
Fatigue Estimation
Drowsiness Estimation
Alertness Estimation
Noise Suppression
Speech Processing
Signal Processing
Voice Recognition
Environmental Control
Multichannel Acoustic Signal
Voice Activity Detection
Information Processing
31 patents (USPTO):Explore Patents

Title: **Innovative Contributions of Masanori Tsujikawa: A Pioneer in Environment Management Systems**

Introduction

Masanori Tsujikawa is an influential inventor based in Tokyo, Japan, whose work has significantly advanced the field of environment management systems. With a remarkable portfolio of 27 patents to his name, he continues to push the boundaries of innovation through his inventive solutions.

Latest Patents

Among Tsujikawa's latest patents is an area-specific environment management system designed to optimize arousal levels within various environments. This system integrates a biological information sensor to capture data about individuals or groups within a specific area, along with an environmental information sensor to assess the surroundings. The arousal level estimation section evaluates the biological data using an estimation model, allowing the environment provision section to customize the environment based on the determined arousal level. This includes managing states ranging from sleepy to excessively awake, thereby enhancing individual experiences in various settings.

Another significant patent from Tsujikawa is an alertness estimation apparatus. This device employs an image extraction unit to analyze part of a human's face, focusing on the eyes. It features a first alertness estimation unit that gauges initial alertness levels from the extracted image. If conditions are met, a pulse wave detection unit will collect pulse wave data from the individual, allowing for a more accurate two-tier analysis of human alertness through a second estimation unit.

Career Highlights

Masanori Tsujikawa's career is marked by valuable contributions while working with notable companies, including NEC Corporation and Daikin Industries, Ltd. His experience in these organizations has helped hone his inventive skills and expand his understanding of advanced technological applications.

Collaborations

Throughout his career, he has had the privilege of collaborating with remarkable colleagues, including Tadashi Emori and Takayuki Arakawa. Their partnerships have likely driven innovative ideas and enhanced the efficacy of the projects they undertook together.

Conclusion

As a distinguished inventor, Masanori Tsujikawa's creations in area-specific environment management and alertness estimation exemplify the innovative spirit that drives progress in the technology sector. His numerous patents reflect a commitment to improving user experience through advanced environmental control, solidifying his reputation as a pioneer in this rapidly evolving field.

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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