Company Filing History:
Years Active: 1994
Title: Virginia A Hallfrisch: Innovator in Composite Membrane Technology
Introduction
Virginia A Hallfrisch is a notable inventor based in Midland, MI (US). She has made significant contributions to the field of membrane technology, particularly through her innovative methods for creating composite membranes. Her work has implications for various applications, including water purification and filtration processes.
Latest Patents
Virginia A Hallfrisch holds a patent for a "Method of making thin film composite membranes." This patent describes a method for producing a semipermeable composite membrane that features a discriminating layer formed in situ by interfacial polymerization. The method allows for the removal of a water-immiscible solvent for a reactant in the interfacial polymerization using physical means, such as a water knife, air knife, roller, or rubber blade, without requiring a phase change. The resulting composite membranes exhibit good flux, excellent salt rejection, and low levels of remaining organic solvent, making them highly effective for various applications.
Career Highlights
Virginia A Hallfrisch is currently employed at The Dow Chemical Company, where she continues to advance her research and development efforts in membrane technology. Her innovative approach has positioned her as a key figure in her field, contributing to the company's reputation for excellence in chemical manufacturing and innovation.
Collaborations
Virginia has collaborated with esteemed colleagues, including David R Johnson and Kenneth J Stutts. These partnerships have fostered a collaborative environment that encourages the exchange of ideas and the advancement of technology in the field of composite membranes.
Conclusion
Virginia A Hallfrisch is a pioneering inventor whose work in composite membrane technology has made a significant impact. Her innovative methods and dedication to research continue to influence the industry and inspire future advancements.