Mitsufuji Acquires European and Chinese Patents for "Deep Body Temperature Change Estimation Algorithm" Supporting Occupational Safety in Extreme Heat
Mitsufuji has newly acquired European and Chinese patents for its "Deep Body Temperature Change Estimation Algorithm" for wearables. This dual-pronged intellectual property strategy, aiming for sales expansion in Europe and technology defense in China, will accelerate its global expansion.
📋 Article Processing Timeline
- 📰 Published: May 7, 2026 at 19:00
- 🔍 Collected: May 7, 2026 at 10:31
- 🤖 AI Analyzed: May 7, 2026 at 11:18 (47 min after Collected)
Mitsufuji Co., Ltd. (Headquarters: Seika-cho, Kyoto; Representative Director and President: Ayumu Mitsudera; hereinafter, Mitsufuji) announces that it has acquired patents in Europe and China for its "algorithm for estimating deep body temperature changes" for wearable devices, jointly developed with the University of Occupational and Environmental Health and Maeda Corporation, following Japan. With the acquisition of these patents, we will fully accelerate sales expansion in the European market, where severe heatwave damage continues, and strengthen the international protection of our technology by securing intellectual property rights in China, thereby solidifying the global expansion of our Japan-originated wearable technology.
With the progression of global warming, heatstroke countermeasures and employee health management in workplaces such as construction, manufacturing, and factories have become a common and important issue in labor management worldwide. In Japan, occupational accidents due to heatstroke in summer are becoming serious, and in Europe, a series of health damages due to record-breaking heatwaves have been reported in recent years. Against this background, the global need for scientifically based occupational safety measures is increasing.
"Deep body temperature" is attracting attention as an important indicator for accurately grasping the body's condition, including heatstroke risk. However, because it is the temperature of areas close to the brain and internal organs, conventional methods have mainly involved invasive measurements that insert sensors into the body, posing a challenge in continuously and easily measuring it in daily life and work environments without burdening the body.
This algorithm is characterized by its ability to continuously estimate changes in deep body temperature from pulse data without burdening the body. For several years, Mitsufuji has been developing and providing wearable devices equipped with this algorithm, which can detect heatstroke risk simply by wearing it on the wrist. Through introduction and operation in actual construction and manufacturing sites, its practicality has been verified and improved, establishing it as a usable technology in the field.
This makes it possible to visualize health management, which traditionally relied on workers' self-reporting and experience, based on objective vital data. Companies can not only ensure employee safety but also connect this to concrete measures on site, such as calling out or taking breaks when risks are detected.
Europe is a globally advanced market for occupational safety and health regulations. Mitsufuji aims to further promote its services and products in the European market, seeking to expand sales through strengthened collaboration with local partner companies and providing wearable occupational safety solutions. Meanwhile, in the Chinese market, the world's largest manufacturing hub, we will ensure the global expansion of our Japan-originated wearable technology by promoting technology defense through securing intellectual property rights for our technology.
[Patent Overview]
Japan: Patent No. 7175473
China: ZL 202080063510.7
Europe: EP 4030157
Comment from Ayumu Mitsudera, Representative Director and President:
"The risk of occupational accidents due to extreme heat is becoming more serious year by year, and it is now a social issue not only in Japan but also in Europe and various parts of the world. We have been working on the social implementation of wearable technology that 'visualizes' heatstroke risk. We regard the acquisition of these international patents as a result of our technology's practicality and uniqueness being internationally recognized. We will continue to contribute globally to creating a society that protects people's lives and health."
With the progression of global warming, heatstroke countermeasures and employee health management in workplaces such as construction, manufacturing, and factories have become a common and important issue in labor management worldwide. In Japan, occupational accidents due to heatstroke in summer are becoming serious, and in Europe, a series of health damages due to record-breaking heatwaves have been reported in recent years. Against this background, the global need for scientifically based occupational safety measures is increasing.
"Deep body temperature" is attracting attention as an important indicator for accurately grasping the body's condition, including heatstroke risk. However, because it is the temperature of areas close to the brain and internal organs, conventional methods have mainly involved invasive measurements that insert sensors into the body, posing a challenge in continuously and easily measuring it in daily life and work environments without burdening the body.
This algorithm is characterized by its ability to continuously estimate changes in deep body temperature from pulse data without burdening the body. For several years, Mitsufuji has been developing and providing wearable devices equipped with this algorithm, which can detect heatstroke risk simply by wearing it on the wrist. Through introduction and operation in actual construction and manufacturing sites, its practicality has been verified and improved, establishing it as a usable technology in the field.
This makes it possible to visualize health management, which traditionally relied on workers' self-reporting and experience, based on objective vital data. Companies can not only ensure employee safety but also connect this to concrete measures on site, such as calling out or taking breaks when risks are detected.
Europe is a globally advanced market for occupational safety and health regulations. Mitsufuji aims to further promote its services and products in the European market, seeking to expand sales through strengthened collaboration with local partner companies and providing wearable occupational safety solutions. Meanwhile, in the Chinese market, the world's largest manufacturing hub, we will ensure the global expansion of our Japan-originated wearable technology by promoting technology defense through securing intellectual property rights for our technology.
[Patent Overview]
Japan: Patent No. 7175473
China: ZL 202080063510.7
Europe: EP 4030157
Comment from Ayumu Mitsudera, Representative Director and President:
"The risk of occupational accidents due to extreme heat is becoming more serious year by year, and it is now a social issue not only in Japan but also in Europe and various parts of the world. We have been working on the social implementation of wearable technology that 'visualizes' heatstroke risk. We regard the acquisition of these international patents as a result of our technology's practicality and uniqueness being internationally recognized. We will continue to contribute globally to creating a society that protects people's lives and health."