Inventor
KRIEHN HARTMUT
DE13 patents
⚠️ This page may combine multiple inventors who share the name “KRIEHN HARTMUT”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
LEYBOLD AG
7 patentsUS4940398AJul 10, 1990
Twin-shaft, multiple-stage vacuum pump with the shafts vertically disposed
LEYBOLD AG24 citations92
US5364245ANov 15, 1994
Dry-running twin-shaft vacuum pump
LEYBOLD AG20 citations91
US5718565AFeb 17, 1998
Apparatus and process for operating a dry-compression vacuum pump
LEYBOLD AG24 citations90
US5975857ANov 2, 1999
Process for operating a dry-compression vacuum pump as well as a suitable vacuum pump for implementation of this process
LEYBOLD AG6 citations71
US5131825AJul 21, 1992
Multi-stage vacuum pump with reaction chamber between stages
LEYBOLD AG18 citations70
US5660535AAug 26, 1997
Method of operating a claw-type vacuum pump and a claw-type vacuum pump suitable for carrying out the method
LEYBOLD AG9 citations66
US5399817AMar 21, 1995
Muffler
LEYBOLD AG5 citations62
LEYBOLD VAKUUM GMBH
5 patentsUS6758660B2Jul 6, 2004
Screw vacuum pump with a coolant circuit
LEYBOLD VAKUUM GMBH19 citations91
US7056108B2Jun 6, 2006
Cooled screw-type vacuum pump
LEYBOLD VAKUUM GMBH9 citations71
US6964559B2Nov 15, 2005
Two shaft vacuum pump with cantilevered rotors
LEYBOLD VAKUUM GMBH7 citations71
US7153093B2Dec 26, 2006
Vacuum pump
LEYBOLD VAKUUM GMBH6 citations60
US6863511B2Mar 8, 2005
Two-shaft vacuum pump
LEYBOLD VAKUUM GMBH3 citations59