Granted Patent
Utility
US 6,446,444 · App. 09/872,280
Digital signal process control of stirling cycle cryogenic cooler drive and high temperature superconducting filter temperature control loop
Inventors:
David R. Chase, David Cooper, Jon D. Burnsed, Anthony C. Jones
Patented Case
View Patent ↗
Granted: Sep 10, 2002
Filed: May 31, 2001
Inventors
David R. Chase
David Cooper
Jon D. Burnsed
Anthony C. Jones
Assignee (at issue)
Superconductor Technologies Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.