Gregory L Hemmer

Title: Innovations of Gregory L Hemmer

Introduction

Gregory L Hemmer is a notable inventor based in Mt. Vernon, MI (US). He has made significant contributions to the field of chemistry, particularly in the production of aromatic dianhydrides. With a total of three patents to his name, Hemmer's work showcases his expertise and innovative approach to chemical processes.

Latest Patents

Hemmer's latest patents include a method for the isolation of an aromatic dianhydride and the aromatic dianhydrides prepared by this method. The first patent describes a process that involves reacting an aromatic diimide with a substituted or unsubstituted phthalic anhydride in an aqueous medium, utilizing an amine exchange catalyst. This method results in an aqueous reaction mixture containing an N-substituted phthalimide and an aromatic tetraacid salt. The process further details the extraction of phthalimide from the mixture using an organic solvent in a single packed extraction column, ultimately converting the aromatic tetraacid salt to the corresponding aromatic dianhydride. The second patent outlines a similar method but includes a two-step extraction process with varying temperatures and time periods, leading to the same end product.

Career Highlights

Gregory L Hemmer is currently associated with Shpp Global Technologies B.V., where he continues to innovate and develop new chemical processes. His work has been instrumental in advancing the production methods of aromatic compounds, which have various applications in the industry.

Collaborations

Hemmer has collaborated with notable coworkers such as Sivakumar Periyasamy and Robert John Werling. Their combined expertise has contributed to the successful development of Hemmer's patented methods.

Conclusion

Gregory L Hemmer's contributions to the field of chemistry through his innovative patents highlight his role as a significant inventor. His work not only advances chemical processes but also showcases the importance of collaboration in achieving groundbreaking results.