Location History:
- Boston, MA (US) (1988)
- Gulph Mills, PA (US) (1986 - 1990)
- West Chester, PA (US) (1990 - 1991)
Company Filing History:
3 out of 3 
2 out of 2 
2 out of 2 Years Active: 1986-1991
Title: Innovations by Christopher F McConnell
Introduction
Christopher F McConnell is a notable inventor based in Gulph Mills, PA (US). He holds a total of 11 patents, showcasing his significant contributions to the field of semiconductor processing. His innovative approaches have led to advancements in the cleaning and drying of semiconductor wafers.
Latest Patents
One of his latest patents is an "Apparatus for rinsing and drying surfaces." This invention addresses the challenge of drying object surfaces, such as semiconductor wafers, by replacing rinsing fluid with drying vapor. The method ensures that no liquid droplets remain on the surfaces after the transition from water to drying vapor. The drying vapor is designed to be miscible with water and forms a minimum-boiling azeotrope with water, such as isopropanol. Additionally, a stream of dry, inert, noncondensable gas, like nitrogen, is used to purge the drying vapor. The system operates in a hydraulically full environment, eliminating the need for movement or handling of the surfaces between rinsing and drying steps.
Another significant patent is the "Apparatus for treating wafers with process fluids." This invention reduces contamination of wafers through an enclosed full-flow method for cleaning and processing semiconductor wafers. The process fluids flow continuously past the wafers, allowing for cleaning with hot corrosive fluids, rinsing with high purity water, and drying with isopropanol without requiring movement of the wafers between steps. The system also allows for precise mixing of chemical reagents, which can be applied to the wafer surface for controlled periods.
Career Highlights
Throughout his career, Christopher has worked with various companies, including CFM Technologies Limited Partnership. His work has significantly impacted the semiconductor industry, particularly in improving the efficiency and effectiveness of wafer processing.
Collaborations
Christopher has collaborated with notable individuals in his field, including Alan E Walter. Their combined expertise has contributed to the development of innovative solutions in semiconductor processing.
Conclusion
Christopher F McConnell's contributions to the field of semiconductor processing through his patents and collaborations highlight his role as a leading inventor. His innovative approaches continue to influence the industry and pave the way for future advancements.