Inventor
HEIM CARL J
US4 patents
Patents
4 patentsUS5524442AJun 11, 1996
Cooling system employing a primary, high pressure closed refrigeration loop and a secondary refrigeration loop
PRAXAIR TECHNOLOGY INC88 citations93
US5390533AFeb 21, 1995
Pressurizing with and recovering helium
PRAXAIR TECHNOLOGY INC18 citations79
US5344480ASep 6, 1994
Pressurizing with and recovering helium
PRAXAIR TECHNOLOGY INC16 citations79
US5391358AFeb 21, 1995
Gas purification system
PRAXAIR TECHNOLOGY INC14 citations70