James L Stephenson, Jr

Title: **James L. Stephenson, Jr.: Innovator in Mass Spectrometry**

Introduction

James L. Stephenson, Jr. is a noteworthy inventor based in Raleigh, NC, who has contributed significantly to the field of mass spectrometry. With a total of 8 patents to his name, his work has advanced the analytical capabilities within medical and biological research.

Latest Patents

Among his notable innovations are two latest patents that showcase his expertise in mass spectrometry. The first patent, "Methods for mass spectrometry of mixtures of proteins or polypeptides using proton transfer reaction," introduces a method for analyzing biological samples. This method involves creating an extract from the sample, introducing it into an electrospray ionization source, and using proton transfer reactions to generate a mass spectrum that identifies the presence of various compounds and microorganisms.

The second patent, "Automated determination of mass spectrometer collision energy," outlines a novel way to determine the collision energy required for effective analyte dissociation in collision-induced dissociation. This approach uses the molecular weight and charge state of precursor ions to establish dissociation parameters and enhance real-time control over the analysis, improving the efficiency and reliability of mass spectrometric experiments.

Career Highlights

James has had a remarkable career, which includes significant roles in reputable companies. He has worked with Thermo Finnigan LLC and Oxoid Limited, contributing his expertise and inventive spirit to enhance mass spectrometry technologies.

Collaborations

Throughout his career, James has collaborated with esteemed colleagues like Ping F. Yip and Oksana Gvozdyak. Together, they have worked on various projects that have pushed the boundaries of scientific research and technological advancements in the field.

Conclusion

James L. Stephenson, Jr. embodies the spirit of innovation in the analytical sciences. With a solid portfolio of patents and collaborations with prominent professionals, his work continues to influence the evolution of mass spectrometry, paving the way for future advancements in the field.