Company Filing History:
3 out of 3,345 
3 out of 2,714 
1 out of 745 Years Active: 1977-1993
Title: The Innovative Journey of Inventor Tao-Yuan Chang
Introduction
Tao-Yuan Chang, an accomplished inventor based in Lincroft, NJ, has made significant contributions to the field of semiconductor technology. With a total of seven patents to his name, Chang's work demonstrates a deep commitment to advancing innovation in the electronics industry.
Latest Patents
Among Chang's notable patents is a groundbreaking **Method for Manufacturing a Semiconductor Device**. This innovative process includes a step of evaluating the dopant profile in a processed or partially processed wafer, achieved through nondestructive measurement of the differential reflectivity spectrum. This technology allows for a detailed understanding of the dopant profile in the depth dimension, which is essential for optimizing semiconductor device performance.
Additionally, Chang has developed a **Semiconductor Device Including Cascadable Polarization Independent** technology. This invention aims to enhance polarization independence and improve intrinsic speed by reducing device capacitance. The modulation-doped semiconductor heterostructure designed by Chang features a graded bandgap layer that facilitates carrier flow while minimizing leakage current. The innovative design allows for efficient cascading with other modulation-doped structures, paving the way for future advancements in semiconductor applications.
Career Highlights
Throughout his career, Chang has worked with esteemed organizations such as AT&T Bell Laboratories and Bell Telephone Laboratories. His tenure at these companies has been marked by significant developments in semiconductor technologies and has solidified his reputation as a leading inventor in his field.
Collaborations
During his professional journey, Chang has collaborated with prominent coworkers, including Israel Bar-Joseph and Daniel S. Chemla. These partnerships have fostered a collaborative environment that has contributed to his innovative advancements and a deeper understanding of semiconductor applications.
Conclusion
Tao-Yuan Chang’s contributions to semiconductor technology are characterized by his innovative patents and collaborative spirit. His ability to push the boundaries of what is possible in the field is a testament to his skills as an inventor. As technology continues to evolve, Chang’s work will undoubtedly play a significant role in shaping the future of semiconductors.