The potential therapy device IAS30000 has been granted a patent.

We are pleased to announce that Impressions Co., Ltd. (Headquarters: Amagasaki City, Hyogo Prefecture, CEO: Yuichi Kojima, hereinafter referred to as “our company”) has obtained a patent for the “Waveform Generation and Output System of Electric Potential Therapy Device Using Inverter Control System, Effective Waveform Programs, and Waveform Variations” implemented in our developed product, IAS30000.

(1) Invention Name: “Electric Potential Therapy Device”
(2) Patent Number: “Patent No. 6433054”
(3) Patent Holder: “LibreX Co., Ltd.”*
(4) Registration Date: “November 16, 2018”
*LibreX Co., Ltd. is the manufacturing company of IAS30000.

LibreX Co., Ltd.


Through inverter control, the IAS30000 dynamically varies the output voltage and waveform in a periodic manner, thereby suppressing neural fatigue, promoting relaxation, and alleviating stress. By changing the output frequency patterns, it minimizes neural adaptation and enhances sedative effects. Additionally, by incorporating intervals in the waveform, it refreshes the nerves and maintains a comfortable sensory experience. The IAS30000 demonstrates excellent relaxation effects and helps relieve tension and stress by utilizing these features.

[The inverter control system]

The inverter control system is a method of controlling the voltage, frequency, and other parameters of alternating current (AC) power using an inverter. Originally, an inverter referred to a circuit that converts direct current (DC) power into AC power. However, in modern usage, the term “inverter” encompasses a wide range of devices that utilize power electronics to convert AC power from sources such as commercial power supply into variable frequency AC power. An inverter device consists of a rectifier circuit that converts commercial AC power into DC power, a smoothing circuit that stabilizes the DC power, and an inverter circuit that converts the DC power back into AC power. The operation of an inverter is controlled by a control circuit. The output of an inverter is AC power. When using inverter control, the frequency, voltage, and other parameters of the AC power output by the inverter can be adjusted and controlled.


The IAS30000 is a next-generation electric potential therapy device that enables more than double the electrical conduction compared to previous models, thanks to the use of silver material for electrical conduction and the implementation of All-Inverter Control. The electric field generated, with a maximum of 14,000 volts, envelops the body and contributes to improving blood circulation, regulating the autonomic nervous system, and balancing hormone and ion levels. The device has also obtained recognition from the Ministry of Health, Labour and Welfare for its effectiveness in relieving symptoms related to headaches, shoulder stiffness, insomnia, and chronic constipation.

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