Esther K Yang

Title: Esther K Yang: Innovator in Enzyme Substrates and Immunoassays

Introduction

Esther K Yang is a prominent inventor based in Wilmington, DE (US). She has made significant contributions to the fields of enzyme substrates and immunoassays. With a total of 2 patents, her work has had a notable impact on scientific research and applications.

Latest Patents

One of her latest patents focuses on the stabilization and reduction of background fluorescence of hydroxy coumarin ester enzyme substrates. This innovation allows the substrates to be stored in a strong base at pH above 11, which stabilizes the substrate against premature hydrolysis of the ester bond and reduces the level of contaminating hydroxy coumarin. When diluted in buffer at pH below 11 shortly before use in an enzyme assay, the substrate solution provides low background fluorescence. Another significant patent involves coated chromium dioxide particles. This invention addresses the need for magnetic particles useful in immunoassays, providing a core of CrO.sub.2 that has a reduced surface, coated with silica and further coated with a silane to protect against hydrolytic degradation.

Career Highlights

Esther K Yang is associated with E.I. DuPont de Nemours and Company, where she has been able to apply her innovative ideas in a corporate setting. Her work has contributed to advancements in various scientific fields, particularly in enzyme assays and immunoassays.

Collaborations

Throughout her career, Esther has collaborated with notable colleagues, including Hon-Peng P Lau and Howard W Jacobson. These collaborations have further enhanced her research and development efforts.

Conclusion

Esther K Yang is a distinguished inventor whose work in enzyme substrates and immunoassays has led to significant advancements in scientific research. Her contributions continue to influence the field and inspire future innovations.