Special Notice: NATIONAL AERONAUTICS AND SPACE ADMINISTRATION is seeking inquiries from companies interested in obtaining license rights to commercialize, manufacture, and market a Portable Compact Thermionic Power Cell. This technology is a small, compact, lightweight power source that converts heat to electricity, making it ideal for remote, hazardous, or isolated applications such as remote sensors/transmitters in severe environments. Interested parties can submit a license application through NASA's Automated Technology Licensing Application System (ATLAS). For more information, please visit the NASA Technology Transfer Portal. No follow-on procurement is expected from this notice.