GENEVA, March 29 -- HUANENG CLEAN ENERGY RESEARCH INSTITUTE (Lab Block A, Huaneng Base Beiqijia Future Science Park,Changping District, Beijing 102209), 中国华能集团清洁能源技术研究院有限公司 (中国北京市昌平区北七家镇未来科技城华能人才创新创业基地实验楼A楼) filed a patent application (PCT/CN2025/118742) for "CARBON DIOXIDE CAPTURE AND ABSORBENT PURIFICATION SYSTEM AND METHOD COUPLED WITH METAL REFINING" on Sep 03, 2025. With publication no. WO/20...