This patent portfolio covers pioneering technologies for high-efficiency axial and counter-rotating cooling fans designed to meet the escalating thermal management demands of modern electronics. The inventions protect optimized single-rotor fan architectures that achieve counter-rotating performance levels with a single motor, advanced variable-curvature blade designs that significantly improve airflow and pressure, thin-profile counter-rotating fan structures for compact, high-density environments, and cost-effective manufacturing methods for producing overlapped blades with continuous curved surfaces. Collectively, these technologies deliver substantial gains in airflow, efficiency, noise reduction, and manufacturability, making them highly applicable to servers, data centers, AI hardware, PCs, automotive systems, and industrial cooling applications. With early priority dates dating back to 2021 and unencumbered ownership, the portfolio represents infrastructure-level IP and a compelling licensing or acquisition opportunity for cooling system manufacturers and electronics OEMs targeting next-generation, energy-efficient thermal solutions.