Who believed that continuous quality improvements are necessary for a company to achieve leadership in quality?

The belief in continuous quality improvements as vital for achieving leadership in quality is strongly associated with Joseph Juran. Juran emphasized that quality management should be an ongoing effort and advocated for the idea of quality improvement as a continuous process. He introduced the concept of the "Quality Trilogy," which encompasses quality planning, quality control, and quality improvement, all of which must be integrated into a company's culture to enhance overall performance and maintain competitive advantage.

While other quality pioneers like Deming, Ishikawa, and Feigenbaum also contributed significantly to the field of quality management, Juran's specific focus on the necessity of continuous improvement aligns closely with the question. His teachings highlighted that organizations must continuously work on enhancing their processes and products to remain leaders in their respective markets.