United Technologies Corporation (UTC) was an American multinational conglomerate that specialized in high-technology products and services. Founded in 1934, the company operated in various sectors, including aerospace, building systems, and industrial products. UTC was known for its innovations in aircraft engines, elevators, and HVAC systems. In 2020, UTC merged with Raytheon Company to form Raytheon Technologies Corporation. This merger combined UTC's expertise in aerospace and building systems with Raytheon's strengths in defense and technology, creating a leading company in the aerospace and defense industries.