Company Filing History:
Years Active: 1987-1989
Title: The Innovations of Dale J Fixsen
Introduction
Dale J Fixsen is an accomplished inventor based in St. Louis Park, MN (US). With a focus on cryogenics and superconducting electronic circuitry, he holds 2 patents that showcase his innovative contributions to technology.
Latest Patents
One of his latest patents is the "Long hold time cryogens dewar." This invention involves a liquid cryogen dewar constructed with multiple chambers, where the innermost chambers contain cryogens with higher boiling or sublimation temperatures than those in the outer chambers. The design allows for the use of liquid helium, liquid nitrogen, and solid CO₂, with superconducting electronic circuitry such as SQUID devices connected to the outer case of the liquid helium chamber. An isothermal shield is also included, supported by glass epoxy rods and polyester cords of low thermal conductivity. Additionally, a fill and exhaust port is provided for efficient operation.
Another significant patent is the "Single frequency noise reduction circuit for SQUIDs." This invention features a two-junction DC SQUID that receives a single square-wave frequency signal. This signal biases the SQUID while also providing modulation with a square-wave train that is 90 degrees phase displaced. This innovative approach effectively eliminates low-frequency noise through cross-modulation frequency products.
Career Highlights
Dale J Fixsen has worked with notable companies such as Unisys Corporation and Sperry Corporation. His experience in these organizations has contributed to his expertise in the field of cryogenics and superconducting technologies.
Collaborations
Throughout his career, Dale has collaborated with talented individuals, including Roger Noel Hastings and John A Imsdahl. These partnerships have likely enriched his work and led to further advancements in his inventions.
Conclusion
Dale J Fixsen's contributions to the fields of cryogenics and superconducting electronics are significant. His innovative patents reflect his dedication to advancing technology and improving existing systems.