Technical analysis of China's aluminum electrolytic capacitor industry in 2017(2)

Industry technology status analysis:

1. The number of industry patent applications

Judging from the trend of changes in the total number of patent applications for aluminum electrolytic capacitors in China, before 2005, China’s patented aluminum electrolytic capacitors had a relatively small number of patent applications and the growth rate was relatively slow. Aluminum electrolytic capacitor technology was still in its infancy; after 2005, aluminum electrolytic capacitors The technology has gradually entered a stage of rapid development. The number of new patent applications each year has increased to varying degrees. In particular, in 2015-2017, the number of patent applications for aluminum electrolytic capacitors in China exceeded 200, reaching 239, respectively, 234 Items and 236 items.

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2. The number of public patent disclosure

Judging from the trend of changes in the total number of aluminum electrolytic capacitors in China, from 1998 to 2017, the number of publicly disclosed patents related to aluminum electrolytic capacitors in China showed a fluctuating upward trend. 2016 and 2017 reached their maximum values in recent years with 268 items. As of the end of May 2018, the number of patents related to aluminum electrolytic capacitors in China has reached 181, and it is expected to exceed 300 in the year.

3. Composition of industry technology applicants

Judging from the composition of patent applicants for aluminum electrolytic capacitors, Hunan Aihua Group (603989) Co., Ltd. applied for a total of 101 patents related to aluminum electrolytic capacitors, which is the largest number of applications; followed by Matsushita Electric Industrial Co., Ltd. 80 items; Nantong Xinsaneng Electronics Co., Ltd. applied for a total of 76 aluminum electrolytic capacitors related patents, ranking third; ranked fourth is Dongguan Dongyang Solar Capacitor Co., Ltd., applied for a total of 57 patents related to aluminum electrolytic capacitors.

4. Industry hot technology

From the perspective of the public patent technology distribution of China's aluminum electrolytic capacitor industry, H01G (capacitors; electrolytic capacitors, rectifiers, detectors, switching devices, photosensors, or thermal devices) has the largest amount of distribution and has a total of 2,184 patented technologies. It accounted for 67.64% of the total number of patents for aluminum electrolytic capacitors; followed by C25F (method for removing material on objects by electrolysis; its equipment used), a total of 116 items were publicly disclosed; and the amount of C25D disclosed was 91 items, ranking third.