INTERNATIONAL PATENT: CRRC DALIAN INSTITUTE CO., LTD., 中车大连机车研究所有限公司 FILES APPLICATION FOR "LOW-TEMPERATURE-RESISTANT QUASI-TWO-STAGE COMPRESSION VARIABLE FREQUENCY CARBON DIOXIDE HEAT PUMP AIR CONDITIONER FOR RAIL VEHICLE"

GENEVA, July 28 -- CRRC DALIAN INSTITUTE CO., LTD. (No.49 Zhongchang Street, Shahekou DistrictDalian, Liaoning 116021), 中车大连机车研究所有限公司 (中国辽宁省大连市沙河口区中长街49号) filed a patent application (PCT/CN2024/131471) for "LOW-TEMPERATURE-RESISTANT QUASI-TWO-STAGE COMPRESSION VARIABLE FREQUENCY CARBON DIOXIDE HEAT PUMP AIR CONDITIONER FOR RAIL VEHICLE" on Nov 12, 2024. With publication no. WO/2025/152582, the details related to the patent application was published on Jul 24, 2025.

Notably, the patent application was submitted under the International Patent...