Company Filing History:
Years Active: 2001-2007
Title: Innovations of James J Donald
Introduction
James J Donald is a notable inventor based in Phoenix, AZ (US). He has made significant contributions to the field of substrate handling technology, holding a total of 6 patents. His work focuses on enhancing the efficiency and accuracy of substrate processing systems.
Latest Patents
One of his latest patents is the "Wafer edge with light sensor." This apparatus is designed to detect the presence of a substrate carried by an end effector within a substrate processing system. It includes a receiving member coupled to the end effector and a light sensor that detects the amount of light transmitted by the receiving member. In a modified embodiment, the apparatus also features a transmitting member that receives light from a light source and is coupled to the end effector.
Another significant patent is the "Out-of-pocket detection system using wafer rotation as an indicator." This optical substrate placement device utilizes light from the surface of a rotating substrate to generate a signal component oscillating at the frequency of rotation. The magnitude of another signal, resulting from filtering the signal component, reveals whether the substrate is misplaced or 'out-of-pocket.' Preferred embodiments of this invention employ reactor heat lamps as the light source.
Career Highlights
James J Donald is currently employed at Asm America, Inc. His work at the company has been instrumental in advancing substrate handling technologies. His innovative approaches have led to the development of practical solutions that address common challenges in the industry.
Collaborations
James has collaborated with notable colleagues such as Henk De Waard and Zhimin Lu. Their combined expertise has contributed to the successful development of various technologies in substrate processing.
Conclusion
James J Donald's contributions to substrate handling technology through his patents and collaborations highlight his role as an influential inventor in the field. His innovative solutions continue to impact the industry positively.