Location History:
- Pullman, WA (US) (2014)
- Spokane, WA (US) (1986 - 2020)
Company Filing History:
5 out of 462 
1 out of 1,765 
1 out of 131 
Years Active: 1986-2020
Title: Innovations of William F Siems
Introduction
William F Siems is a notable inventor based in Pullman, WA (US), recognized for his contributions to the field of ion mobility spectrometry. With a total of seven patents to his name, Siems has made significant advancements in the analysis of ion populations and the development of related technologies.
Latest Patents
Among his latest patents is a high accuracy ion mobility spectrometry system. This system includes an ionization region designed to receive and ionize a sample into ionized molecules, along with a detector that is capable of detecting these molecules. The system features a drift region that connects the ionization region and the detector, incorporating first and second ion gates that alternately introduce batches of ionized molecules toward the detector. This innovative design allows for precise measurement of drift times corresponding to the distance between the ion gates. Another significant patent involves a two-phase approach to Fourier transform ion mobility time-of-flight mass spectrometry. This method provides a comprehensive analysis of ion populations by obtaining and combining two data sets from binary On-OFF frequency sweeps, resulting in raw mobility signals for various m/z values.
Career Highlights
Siems has had a distinguished career, working with prominent institutions such as Washington State University and Sandia Corporation. His work has focused on enhancing the capabilities of ion mobility spectrometry, contributing to advancements in analytical chemistry and mass spectrometry.
Collaborations
Throughout his career, Siems has collaborated with notable individuals, including Herbert Henderson Hill, Jr. and Edward E Tarver, III. These collaborations have further enriched his research and development efforts in the field.
Conclusion
William F Siems stands out as an influential inventor in the realm of ion mobility spectrometry, with a strong portfolio of patents that reflect his innovative spirit and dedication to advancing scientific knowledge. His contributions continue to impact the field significantly.