Inventor

DOUGLAS JONATHAN DAVID

US11 patents

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

DOUGLAS JONATHAN DAVID

2 patents

US8151583B2Apr 10, 2012

Expansion valve control system and method for air conditioning apparatus

DOUGLAS JONATHAN DAVID16 citations80

US9234673B2Jan 12, 2016

Heat exchanger with subcooling circuit

DOUGLAS JONATHAN DAVID2 citations54

TRANE INT INC

2 patents

US7866172B2Jan 11, 2011

System and method for controlling working fluid charge in a vapor compression air conditioning system

TRANE INT INC9 citations73

US9689585B2Jun 27, 2017

Method of adaptive control of a bypass damper in a zoned HVAC system

TRANE INT INC1 citations49

HEATCRAFT REFRIGERATION PRODUCTS LLC

2 patents

US11428461B2Aug 30, 2022

Cooling system

HEATCRAFT REFRIGERATION PRODUCTS LLC0 citations51

US10739064B2Aug 11, 2020

Cooling system

HEATCRAFT REFRIGERATION PRODUCTS LLC0 citations41

NORRELL BILLY W

1 patent

US8915295B2Dec 23, 2014

Method of adaptive control of a bypass damper in a zoned HVAC system

NORRELL BILLY W15 citations77

LENNOX IND INC

1 patent

USD800282SOct 17, 2017

Heat exchanger fin

LENNOX IND INC9 citations73

MERCER KEVIN B

1 patent

US8887518B2Nov 18, 2014

Expansion valve control system and method for air conditioning apparatus

MERCER KEVIN B6 citations65

TYCO FIRE & SECURITY GMBH

1 patent

US12379128B2Aug 5, 2025

Energy efficient heat pump systems and methods

TYCO FIRE & SECURITY GMBH1 citations60

Johnson Controls Tyco IP Holdings LLP

1 patent

US11906188B2Feb 20, 2024

Energy efficient heat pump systems and methods

Johnson Controls Tyco IP Holdings LLP0 citations59