China National Petroleum has obtained patents related to oil gauge tools, and the oil gauge cleaning tool improves oil stain cleaning efficiency and reduces labor intensity.

April 2 News, the State Intellectual Property Office information shows that China National Petroleum Corporation has applied for a patent titled “A Cleaning Tool for Oil Gauges,” with authorization announcement number CN224058206U, authorized on March 31, 2026. The application number is CN202520466527.7, with the publication date of March 31, 2026, and the application date of March 17, 2025. The inventors are Qiao Junxia, Qiu Bingli, and Guo Yonghua. The patent agency is Beijing Niusi Baba Intellectual Property Agency Co., Ltd., with patent agent Liu Xiao. The classification numbers are B08B3/08, B08B7/04, B08B1/14.

The patent abstract indicates that this utility model relates to a cleaning tool for oil gauges, including a cleaning cup, a support rod, and a cleaning cloth. The support rod is horizontally arranged inside the cleaning cup, with the cleaning cloth wrapped around the support rod. The cleaning cup contains a degreasing solution. The utility model provides a dedicated cleaning tool for oil gauges using the cleaning cup, allowing an oil-contaminated gauge to be soaked in the cup. When used next time, residual oil can be scraped off the support rod with the cleaning cloth, enabling direct use without worrying about oil falling everywhere. This improves cleaning efficiency and reduces the labor intensity of crude oil water content testing work.

China National Petroleum Corporation was established on November 5, 1999, and listed on the Shanghai Stock Exchange on November 5, 2007. Its registered address is in Beijing, with offices in Beijing and Hong Kong. It is a leading enterprise in the domestic oil and gas industry, with core businesses covering exploration and development of oil and gas, refining, and chemical industries, possessing resource and technological advantages.

Main businesses of China National Petroleum include exploration, development, production, transportation, and sales of crude oil and natural gas, as well as new energy; refining of crude oil and petroleum products, production and sales of chemical products, and new materials; sales of refining products and non-oil products, along with trading operations; transportation and sales of natural gas. The company belongs to the Shenwan industry category of Petroleum and Petrochemical - Refining and Trading - Refining and Chemical Industry, with concept sectors including main polyethylene, Sinopec-related, and oil reform concepts.

In 2025, China National Petroleum’s revenue reached 2,864.469 billion yuan, ranking first among five industry companies, far above the industry average of 1,146.327 billion yuan and median of 75.56B yuan. The second-ranked Sinopec had 2,783.583 billion yuan. In terms of main business composition, refining products accounted for 68.87%, natural gas for 42.66%, etc. Net profit in 2025 was 172.01B yuan, also ranking first in the industry, with an industry average of 41.17B yuan and median of 12.0568 million yuan. The second-ranked Sinopec’s net profit was 35.25 billion yuan.

Recent patent status of China National Petroleum Corporation is as follows:

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