Jiangsu Hongtian Technology(SH:603800) Sou Hu Cai Jing·2026-01-09 11:01Group 1 - The State Intellectual Property Office of China has granted a patent for a "cyclone sand removal device with a filter cartridge" to Chengdu Dawson Drilling Equipment Co., Ltd., Suzhou Dawson Drilling Equipment Co., Ltd., Suzhou Dawson Drilling Equipment Co., Ltd., and Sinopec Zhongyuan Petroleum Engineering Design Co., Ltd. The patent authorization announcement number is CN120515201B, with an application date of April 2025 [1] - Chengdu Dawson Drilling Equipment Co., Ltd. was established in 2020 in Chengdu, focusing on metal products and machinery and equipment repair. The company has a registered capital of 150 million RMB and has participated in 8 bidding projects, holds 18 patents, and has 27 administrative licenses [1] - Suzhou Dawson Drilling Equipment Co., Ltd. was also established in 2020 in Suzhou, specializing in non-ferrous metal smelting and rolling processing. The company has a registered capital of 249 million RMB, has invested in 2 enterprises, participated in 268 bidding projects, holds 19 trademarks, 140 patents, and has 7 administrative licenses [1] Group 2 - Suzhou Dawson Drilling Equipment Co., Ltd. was founded in 2024 in Suzhou, focusing on specialized equipment manufacturing. The company has a registered capital of 158 million RMB, holds 7 patents, and has 8 administrative licenses [2] - Sinopec Zhongyuan Petroleum Engineering Design Co., Ltd. was established in 1993 in Zhengzhou, specializing in professional technical services. The company has a registered capital of 100 million RMB, has invested in 2 enterprises, participated in 3060 bidding projects, holds 271 patents, and has 25 administrative licenses [2]