Youli De Applied for Patent on Direct Current Microampere Device, Device Achieves Continuous Unlimited Direct Current Microampere Output

March 20 News: According to information from the National Intellectual Property Administration, Uleide Technology (China) Co., Ltd. has applied for a patent titled “Continuous Output DC Micro-Current Device and Method.” The application publication number is CN121680552A, the application number is CN202511892194.5, the publication date is March 17, 2026, and the application date is December 16, 2025. The inventors are Lin Bozhong, Wu Zhongliang, Wang Qinchang, and Zhang Xiangling. The patent agency is Dongguan Xingbang Intellectual Property Agency (Special Partnership), with patent agent Zhang Yongcong. The classification code is G05F1/56.

The patent abstract indicates that this application belongs to the field of precision electronic technology, specifically involving a device and method for continuous output of DC micro-current, including: a line voltage generator; a first micro-differential capacitor and a second micro-differential capacitor; an output voltage detection circuit; a reset circuit used to release charge from the first or second micro-differential capacitor to reset to zero potential; a switching execution circuit used to change the state of the first or second micro-differential capacitor; a switching control circuit configured to control the switching execution circuit to operate when the output voltage detection circuit monitors the voltage signal reaching a preset threshold, switching the first or second micro-differential capacitor between working and reset states. This device addresses the shortcomings of existing technology that outputs periodic square waves, achieving continuous, unlimited DC micro-current output, especially suitable for high-precision calibration scenarios requiring long-term stable current excitation.

Tianyancha data shows that Uleide Technology (China) Co., Ltd. was established on December 5, 2003. The legal representative is Hong Shaojun. The industry is instrument manufacturing, with a large enterprise scale. Registered capital is 111,767,588 RMB, with paid-in capital of the same amount. The registered address is No. 6, Industrial North First Road, Songshan Lake Park, Dongguan, Guangdong. The company has invested in 9 other enterprises, participated in 514 bidding projects, and holds 77 trademark records, 818 patent records, and 167 administrative licenses.

Recent patent applications by Uleide Technology (China) Co., Ltd. include:

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