Company Filing History:
Years Active: 1994
Title: Todd R Christensen: Innovator in Micromachined Differential Pressure Transducers
Introduction
Todd R Christensen is a notable inventor based in Madison, Wisconsin. He has made significant contributions to the field of pressure sensing technology. His innovative work has led to the development of advanced micromachined differential pressure transducers.
Latest Patents
Todd R Christensen holds a patent for micromachined differential pressure transducers. These microminiature pressure transducers are formed on semiconductor substrates, such as silicon. They include a membrane that spans a cavity over the substrate, with the membrane being mounted and sealed to the substrate at its peripheral edges. The design features an overpressure stop to prevent over-deflections of the membrane toward the substrate. This overpressure stop is formed as a bridge of material, such as nickel, which extends above the membrane and is spaced to allow free deflection under normal pressure conditions. The thickness of the polysilicon membrane and the spacing between the membrane and the overpressure stops are typically in the range of one micrometer or less. The overpressure stop bridge is created using deep X-ray lithography, ensuring a well-defined structure. The gap between the membrane and the bottom surface of the bridge is established with a sacrificial layer, such as a polyimide film, which dissolves in a solvent. This innovative transducer is designed using processing techniques that do not compromise the performance of the membrane as a pressure sensor.
Career Highlights
Todd R Christensen is associated with the Wisconsin Alumni Research Foundation. His work has been instrumental in advancing the capabilities of pressure sensors, particularly in micromachined applications. His contributions have been recognized within the field, showcasing his expertise and innovative spirit.
Collaborations
Todd has collaborated with Henry Guckel, further enhancing the development of pressure sensing technologies. Their partnership has contributed to the successful advancement of their projects.
Conclusion
Todd R Christensen is a distinguished inventor whose work in micromachined differential pressure transducers has made a significant impact in the field of pressure sensing technology. His innovative designs and collaborations continue to influence advancements in this area.