Location History:
- Bel Air, MD (US) (2002 - 2013)
- Middletown, DE (US) (2013 - 2019)
Company Filing History:
10 out of 1,443 
4 out of 295 
1 out of 832,912 Years Active: 2002-2019
Title: David J Hasse: Innovator in Carbon Molecular Sieve Technology
Introduction
David J Hasse is a notable inventor based in Middletown, DE (US). He has made significant contributions to the field of materials science, particularly in the development of advanced carbon molecular sieve membranes. With a total of 15 patents to his name, Hasse's work has had a profound impact on various industrial applications.
Latest Patents
One of Hasse's latest patents focuses on metallopolyimide precursor fibers for aging-resistant carbon molecular sieve hollow fiber membranes with enhanced selectivity. These fibers incorporate transition metal cations that are complexed with electronegative regions of a polyimide. The carbon molecular sieve (CMS) membranes are produced by pyrolyzing these metallopolyimide precursor fibers. The introduction of cations is achieved by including either a salt of the transition metal and an inorganic anion or a transition metal/organic ligand complex in the spin dope composition used for fiber extrusion. Another patent addresses similar technology, emphasizing the use of bore fluid in the extrusion process to enhance the selectivity of the membranes.
Career Highlights
Throughout his career, David J Hasse has worked with prominent companies in the industry. He has been associated with L'Air Liquide Société Anonyme Pour L'Étude Et L'Exploitation Des Procédés Georges Claude and L'Air Liquide, Société Anonyme à Directoire Et Conseil De Surveillance Pour L'Étude Et L'Exploitation Des Procédés Georges Claude. His innovative work in these organizations has contributed to advancements in gas separation technologies.
Collaborations
Hasse has collaborated with several notable professionals in his field, including Sudhir S Kulkarni and Edgar S Sanders, Jr. These collaborations have further enriched his research and development efforts, leading to groundbreaking innovations.
Conclusion
David J Hasse stands out as a significant figure in the realm of carbon molecular sieve technology. His innovative patents and contributions to the industry reflect his dedication to advancing materials science. His work continues to influence the development of new technologies in gas separation and filtration.