Company Filing History:
3 out of 8,373 
2 out of 16,080 Years Active: 1983-1989
Title: Clifton G Fonstad: Innovator in Semiconductor Technology
Introduction
Clifton G Fonstad is a prominent inventor based in Arlington, MA, who has made significant contributions to the field of semiconductor technology. With a remarkable portfolio of five patents, Fonstad has excelled in developing innovative methods and apparatuses that enhance the functionality and efficiency of semiconductor devices.
Latest Patents
Fonstad's latest innovations include a groundbreaking patent for **Phase-Locked Semiconductor Laser Arrays**. This invention describes a method and apparatus that phase-locks individual light waves propagating in adjacent waveguides. The waveguides are intercoupled in a unique unguided mode-mixing region, allowing for various modes of propagation to mix by diffraction. The specific design ensures that the phase difference between adjacent waveguides is an integral multiple of 2π, optimizing the performance of the laser arrays.
Additionally, he has developed a patent on the **Growth of Epitaxial Films by Chemical Vapor Deposition**. This method focuses on forming epitaxial thin film layers on substrates with abrupt transitions between layers of differing compositions or doping levels. By injecting gaseous reactants into a Chemical Vapor Deposition (CVD) chamber and creating a controlled electric discharge, Fonstad's method enables a seamless transition in film deposition, ensuring high quality and precision in semiconductor manufacturing.
Career Highlights
Throughout his career, Clifton G Fonstad has worked with esteemed institutions, including the Massachusetts Institute of Technology (MIT) and the United States of America, as represented by the Secretary of the Navy. His experiences at these institutions have greatly influenced his research and innovation.
Collaborations
Fonstad has collaborated with several influential figures in the field, notably L Rafael Reif and Kamal Tabatabaie-Alavi. These collaborations have enabled him to refine his inventions and contribute to ongoing advancements in semiconductor technology.
Conclusion
Clifton G Fonstad stands out as a notable inventor in the semiconductor industry, with his ground-breaking patents and collaborations shaping the future of technology. His commitment to innovation continues to inspire new generations of engineers and researchers in the field.