Inventor
FRITZSCHE STEFFEN
DE11 patents
⚠️ This page may combine multiple inventors who share the name “FRITZSCHE STEFFEN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ZEISS CARL SMT GMBH
6 patentsUS9939730B2Apr 10, 2018
Optical assembly
ZEISS CARL SMT GMBH7 citations82
US9658542B2May 23, 2017
Optical element
ZEISS CARL SMT GMBH4 citations71
US12346033B2Jul 1, 2025
Optical system
ZEISS CARL SMT GMBH0 citations60
US10386733B2Aug 20, 2019
Optical system
ZEISS CARL SMT GMBH1 citations60
US10345547B2Jul 9, 2019
Method for producing a lens for a lithography apparatus, and measurement system
ZEISS CARL SMT GMBH0 citations50
US10761436B2Sep 1, 2020
Optical arrangement, in particular lithography system, with a transport lock
ZEISS CARL SMT GMBH0 citations48
FRESENIUS MEDICAL CARE DE GMBH
4 patentsUS6641731B1Nov 4, 2003
Filter device
FRESENIUS MEDICAL CARE DE GMBH20 citations90
US6419825B1Jul 16, 2002
Closure element
FRESENIUS MEDICAL CARE DE GMBH37 citations90
US6858137B2Feb 22, 2005
Filter module having a closure element
FRESENIUS MEDICAL CARE DE GMBH13 citations82
US7713412B2May 11, 2010
Filter device
FRESENIUS MEDICAL CARE DE GMBH7 citations71