Company Filing History:
Years Active: 2004-2006
Title: The Innovations of Charles H. Keeler
Introduction
Charles H. Keeler is a notable inventor based in Essex Junction, Vermont. He has made significant contributions to the field of technology, particularly in the area of semiconductor manufacturing. With a total of 2 patents to his name, Keeler's work has had a lasting impact on the industry.
Latest Patents
One of Keeler's latest patents is focused on a wafer integrated rigid support ring. This innovation involves a shadow mask for depositing solder bumps, which includes additional dummy holes located adjacent to the holes corresponding to most of the perimeter chips of the wafer. The additional dummy holes provide more uniform plasma etching of contacts on the wafer, improve the etching of contacts on perimeter chips, and lower the contact resistance of these contacts. Furthermore, the extra holes allow for solder bumps outside the perimeter chips, which can support a second shadow mask for the deposition of additional materials, such as tin, on the reflowed solder bumps. This process is essential for mounting chips on a plastic substrate at low temperatures. An improved mask-to-wafer alignment aid is also formed from standard solder bumps, which helps avoid damage to test probes and provides improved course alignment.
Career Highlights
Keeler has had a distinguished career, working at the International Business Machines Corporation (IBM). His role at IBM has allowed him to collaborate with some of the brightest minds in the industry, contributing to advancements in technology and innovation.
Collaborations
Throughout his career, Keeler has worked alongside notable colleagues such as Harry David Cox and David P. Daniel. These collaborations have further enriched his work and have led to significant advancements in the field.
Conclusion
Charles H. Keeler's contributions to technology through his patents and work at IBM highlight his importance as an inventor. His innovations continue to influence the semiconductor industry and demonstrate the value of creativity and collaboration in technological advancements.