Inventor
KARL STEFAN
FR28 patents
⚠️ This page may combine multiple inventors who share the name “KARL STEFAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
VALEO CLIMATISATION
15 patentsUS5896750AApr 27, 1999
Device for the air conditioning of a vehicle when running and parked
VALEO CLIMATISATION127 citations98
US6584785B1Jul 1, 2003
Vehicle heating installation using an evaporator as heat source
VALEO CLIMATISATION28 citations92
US6178761B1Jan 30, 2001
Air conditioning circuit using a refrigerant fluid in the supercritical state, in particular for a vehicle
VALEO CLIMATISATION55 citations92
US6041849AMar 28, 2000
Heating device for vehicle using the coolant fluid circuit
VALEO CLIMATISATION24 citations92
US5934097AAug 10, 1999
Modular component for a refrigerant fluid circuit, in particular for air conditioning the cabin of a motor vehicle
VALEO CLIMATISATION25 citations92
US5740681AApr 21, 1998
Method and apparatus for controlling the temperature of air delivered to the cabin of a motor vehicle
VALEO CLIMATISATION36 citations92
US5720181AFeb 24, 1998
Air conditioning installation, especially for a motor vehicle
VALEO CLIMATISATION45 citations89
US7182129B2Feb 27, 2007
Device for heating and/or air-conditioning the passenger compartment of a motor vehicle
VALEO CLIMATISATION19 citations84
US6286327B1Sep 11, 2001
Refrigerant fluid circuit including an air conditioning loop and a heating loop, in particular for a motor vehicle
VALEO CLIMATISATION12 citations74
US6202430B1Mar 20, 2001
Method and apparatus for detecting excessive pressure in a refrigerant fluid in the condenser of an air conditioning and heating installation
VALEO CLIMATISATION12 citations74
US5924299AJul 20, 1999
Monobloc component for a refrigerant fluid circuit, in particular for air conditioning the cabin of a motor vehicle
VALEO CLIMATISATION14 citations74
US5737930AApr 14, 1998
Air conditioning fluid circuit for a vehicle, giving adjustable heating power
VALEO CLIMATISATION7 citations74
US5692390ADec 2, 1997
Device for controlling the temperature in the passenger compartment of a vehicle with an electric motor
VALEO CLIMATISATION11 citations72
US6109046AAug 29, 2000
Air conditioning apparatus for a vehicle with a heating loop including a variable output compressor
VALEO CLIMATISATION6 citations63
US6073453AJun 13, 2000
Method and device for detecting the presence of liquid at the suction inlet of a compressor of refrigerating fluid
VALEO CLIMATISATION3 citations63
VALEO SYSTEMES THERMIQUES
8 patentsUS12194813B2Jan 14, 2025
Heat treatment system for a motor vehicle
VALEO SYSTEMES THERMIQUES2 citations74
US12427838B2Sep 30, 2025
Thermal conditioning system
VALEO SYSTEMES THERMIQUES1 citations63
US12558939B2Feb 24, 2026
Thermal conditioning system
VALEO SYSTEMES THERMIQUES0 citations51
US12552222B2Feb 17, 2026
Thermal management device for batteries for an electric or hybrid vehicle
VALEO SYSTEMES THERMIQUES0 citations51
US12515498B2Jan 6, 2026
Coolant circuit of a vehicle adapted to fast charging of a storage device
VALEO SYSTEMES THERMIQUES0 citations51
US11725737B2Aug 15, 2023
Fluid circulation valve and thermal treatment system for a vehicle comprising such a valve
VALEO SYSTEMES THERMIQUES0 citations49
US12384223B2Aug 12, 2025
Refrigerant circuit for a vehicle, and method for controlling such a circuit
VALEO SYSTEMES THERMIQUES0 citations47
US10766337B2Sep 8, 2020
Control system for air conditioning system of a motor vehicle
VALEO SYSTEMES THERMIQUES0 citations35