Research Frontiers Incorporated is engaged in the development and marketing of technology and devices to control the flow of light. It develops and licenses its patented suspended particle device (SPD-Smart) light-control technology to other companies that manufacture and/or market the SPD-Smart chemical emulsion, light-control film made from the chemical emulsion, the light-control panels made by laminating the film, electronics to power end-products incorporating the film, or lamination services for, and the end-products themselves, such as smart windows, skylights and sunroofs. It has various companies that, in the aggregate, are licensed to serve five SPD-Smart application areas (aerospace, architectural, automotive, marine and display products) in every country of the world. SPD-Smart products use microscopic light-absorbing nanoparticles suspended within a film. Its licensees manufacture and sell electronically dimmable glazing products incorporating SPD-Smart technology.