Inventor

HEILMANN PAUL

DE7 patents

⚠️ This page may combine multiple inventors who share the name “HEILMANN PAUL”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

DEGUSSA

4 patents

US4867808ASep 19, 1989

Heat treating a metallic workpiece by quenching under cooling gas under above atmospheric pressure and specified circulation rate

DEGUSSA22 citations80

US4682011AJul 21, 1987

Furnace for the partial heat treatment of work tools

DEGUSSA11 citations72

US4869470ASep 26, 1989

Vacuum furnace for heat treatment of metallic workpieces

DEGUSSA8 citations68

US4717787AJan 5, 1988

Thermoelement for measurement of temperature in vacuum furnaces

DEGUSSA7 citations62

ALD VACUUM TECHN GMBH

1 patent

US5630322AMay 20, 1997

Process and apparatus for heat treatment of workpieces by quenching with gases

ALD VACUUM TECHN GMBH102 citations95

LEYBOLD DURFRRIT GMBH

1 patent

US5362031ANov 8, 1994

Method and apparatus for the automatic monitoring of operating safety and for controlling the progress of the process in a vacuum heat-treatment oven

LEYBOLD DURFRRIT GMBH20 citations86

LEYBOLD DURFERRIT GMBH

1 patent

US5225142AJul 6, 1993

Method and apparatus for the automatic monitoring of operating safety and for controlling the progress of the process in a vacuum heat-treatment oven

LEYBOLD DURFERRIT GMBH7 citations71