Company Filing History:
Years Active: 1994-2025
Title: The Innovative Contributions of David J Shieh
Introduction
David J Shieh is a notable inventor based in Sugar Land, TX (US). He has made significant contributions to the field of polyurethane foam technology, holding a total of 6 patents. His work focuses on developing advanced materials that enhance the performance and safety of polyurethane foams.
Latest Patents
Among his latest patents is a groundbreaking invention titled "Polyurethane foam composition comprising an aromatic polyester polyol compound and products made therefrom." This patent describes a polyurethane foam composition that includes an isocyanate compound and one or more isocyanate reactive compounds. Notably, at least one of these compounds is an aromatic polyester polyol that contains an imide moiety. The invention outlines a specific weight ratio of components and emphasizes the properties of the aromatic polyester polyol, which is liquid at 25° C. and has a hydroxy value ranging from about 30 to about 600.
Another significant patent is focused on "High functional polyester polyols." This invention presents aromatic polyester polyols characterized by high functionality, moderate viscosity, and high aromatic content. These polyols are suitable for use as the sole polyol in the production of polyurethane foams, eliminating the need for polyether polyols. The resulting foams can achieve E-84 class one fire properties with a reduction in flame retardants.
Career Highlights
David J Shieh has worked with prominent companies in the industry, including Oxid, L.P. and Huntsman International LLC. His experience in these organizations has allowed him to refine his expertise in polymer chemistry and material science.
Collaborations
Throughout his career, David has collaborated with talented individuals such as Alberto DeLeon and Kai Xi. These partnerships have contributed to the innovative advancements in his field.
Conclusion
David J Shieh's contributions to polyurethane foam technology demonstrate his commitment to innovation and safety in material development. His patents reflect a deep understanding of chemical properties and their applications in real-world products.