Company Filing History:
9 out of 24 
4 out of 20 
2 out of 16 Years Active: 1991-2002
Title: Esko O Lehto: Innovator in Glass Heating Technologies
Introduction
Esko O Lehto, based in Kangasala, Finland, is a distinguished inventor with a remarkable portfolio of 16 patents to his name. His contributions to the field of glass technology are significant, particularly in the heating methods used for glass sheets that undergo tempering and heat-strengthening processes.
Latest Patents
Among his latest innovations is a method for heating glass sheets, which involves utilizing a combination of hot-air blasting and convection heating. This method optimally heats the glass sheets in a preheating furnace, followed by transferring them to a radiation heating furnace to achieve the desired tempering temperatures. By adjusting the rotational speed of the hot-air fan and controlling the heating resistances, Lehto's invention maintains a consistent temperature of the blasted air, effectively addressing any temperature differences between the glass and the surrounding air.
Another significant patent of Lehto's is a process for heat-soak treatment of tempered glass panels. This innovation addresses the issue of spontaneous breakage in tempered glass caused by nickel sulfide stones. By maintaining the glass panels at a specific temperature range for a brief period after tempering, Lehto's process ensures the control of potential defects effectively, thereby improving safety and reliability in glass applications.
Career Highlights
Lehto's career features notable positions at respected companies, including Tamglass Engineering and Tamglass. His work has revolved around improving glass processing technologies, providing companies with cutting-edge solutions that enhance product quality and manufacturing efficiency.
Collaborations
Throughout his career, Lehto has had the opportunity to collaborate with esteemed colleagues like Jukka H. Vehmas and Jorma K. Vitkala. These collaborations have enriched his work and contributed to the development of innovative approaches in the glass processing industry.
Conclusion
Esko O Lehto stands out as a leading figure in the realm of glass technology innovation. His extensive patent portfolio demonstrates his commitment to advancing glass heating methods, and his collaborations with industry peers reflect a shared vision for quality and safety in glass manufacturing. As technology continues to evolve, Lehto's contributions will likely influence future innovations in this field.