Inventor

PFEIFER CHRISTIAN

DE4 patents

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

FREUDENBERG CARL KG

1 patent

US11131386B2Sep 28, 2021

Seal

FREUDENBERG CARL KG8 citations75

KARL WEISS GIESSEN FABRIK ELEK

1 patent

US4041777AAug 16, 1977

Method and apparatus for testing carburetors

KARL WEISS GIESSEN FABRIK ELEK9 citations59

SIEMENS ENERGY GLOBAL GMBH & CO KG

1 patent

US12261438B2Mar 25, 2025

Converter arrangement and method of operation for said converter arrangement

SIEMENS ENERGY GLOBAL GMBH & CO KG0 citations55

SIEMENS AG

1 patent

US11301942B2Apr 12, 2022

Method for trading electrical energy between small producers and end users

SIEMENS AG1 citations53