Assignee
COPELAND CORP
US269 patents
Top patents by PatentIndex Score
US6823680B2Nov 30, 2004
Remote data acquisition system and method
COPELAND CORP246 citations99
US6758050B2Jul 6, 2004
Compressor diagnostic system
COPELAND CORP163 citations99
US6758051B2Jul 6, 2004
Method and system for diagnosing a cooling system
COPELAND CORP177 citations99
US6679072B2Jan 20, 2004
Diagnostic system and method for a cooling system
COPELAND CORP128 citations99
US6560976B2May 13, 2003
Data acquisition system and method
COPELAND CORP126 citations99
US6467280B2Oct 22, 2002
Adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor
COPELAND CORP95 citations99
US6457948B1Oct 1, 2002
Diagnostic system for a compressor
COPELAND CORP137 citations99
US6449972B2Sep 17, 2002
Adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor
COPELAND CORP98 citations99
US6412293B1Jul 2, 2002
Scroll machine with continuous capacity modulation
COPELAND CORP204 citations99
US6324854B1Dec 4, 2001
Air-conditioning servicing system and method
COPELAND CORP203 citations99
US6293767B1Sep 25, 2001
Scroll machine with asymmetrical bleed hole
COPELAND CORP162 citations99
US6206652B1Mar 27, 2001
Compressor capacity modulation
COPELAND CORP129 citations99
US6086335AJul 11, 2000
Capacity modulated scroll machine having one or more pin members movably disposed for restricting the radius of the orbiting scroll member
COPELAND CORP113 citations99
US6047557AApr 11, 2000
Adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor
COPELAND CORP276 citations99
US5741120AApr 21, 1998
Capacity modulated scroll machine
COPELAND CORP206 citations99
US5630325AMay 20, 1997
Heat pump motor optimization and sensor fault detection
COPELAND CORP214 citations99
US5613841AMar 25, 1997
Capacity modulated scroll machine
COPELAND CORP212 citations99
US5440895AAug 15, 1995
Heat pump motor optimization and sensor fault detection
COPELAND CORP187 citations99
US5320506AJun 14, 1994
Oldham coupling for scroll compressor
COPELAND CORP203 citations99
US5156539AOct 20, 1992
Scroll machine with floating seal
COPELAND CORP183 citations99
US4947655AAug 14, 1990
Refrigeration system
COPELAND CORP188 citations99
US4877382AOct 31, 1989
Scroll-type machine with axially compliant mounting
COPELAND CORP345 citations99
US4787211ANov 29, 1988
Refrigeration system
COPELAND CORP182 citations99
US4767293AAug 30, 1988
Scroll-type machine with axially compliant mounting
COPELAND CORP175 citations99
US7260948B2Aug 28, 2007
Compressor diagnostic system
COPELAND CORP67 citations98
US6709244B2Mar 23, 2004
Diagnostic system for a compressor
COPELAND CORP72 citations98
US6615594B2Sep 9, 2003
Compressor diagnostic system
COPELAND CORP194 citations98
US6601397B2Aug 5, 2003
Digital scroll condensing unit controller
COPELAND CORP122 citations98
US5689963ANov 25, 1997
Diagnostics for a heating and cooling system
COPELAND CORP172 citations98
US5640854AJun 24, 1997
Scroll machine having liquid injection controlled by internal valve
COPELAND CORP128 citations98
US5628201AMay 13, 1997
Heating and cooling system with variable capacity compressor
COPELAND CORP216 citations98
US5623834AApr 29, 1997
Diagnostics for a heating and cooling system
COPELAND CORP164 citations98
US5611674AMar 18, 1997
Capacity modulated scroll machine
COPELAND CORP145 citations98
US5528908AJun 25, 1996
Blocked fan detection system for heat pump
COPELAND CORP122 citations98
US5381669AJan 17, 1995
Overcharge-undercharge diagnostic system for air conditioner controller
COPELAND CORP208 citations98
US5303561AApr 19, 1994
Control system for heat pump having humidity responsive variable speed fan
COPELAND CORP158 citations98
US5102316AApr 7, 1992
Non-orbiting scroll mounting arrangements for a scroll machine
COPELAND CORP203 citations98
US6679683B2Jan 20, 2004
Dual volume-ratio scroll machine
COPELAND CORP103 citations97
US6499305B2Dec 31, 2002
Adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor
COPELAND CORP68 citations97
US6419457B1Jul 16, 2002
Dual volume-ratio scroll machine
COPELAND CORP88 citations97
US6408635B1Jun 25, 2002
Adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor
COPELAND CORP59 citations97
US6179589B1Jan 30, 2001
Scroll machine with discus discharge valve
COPELAND CORP97 citations97
US6176686B1Jan 23, 2001
Scroll machine with capacity modulation
COPELAND CORP164 citations97
US5875638AMar 2, 1999
Refrigerant recovery system
COPELAND CORP159 citations97
US5707210AJan 13, 1998
Scroll machine with overheating protection
COPELAND CORP219 citations97
US5607288AMar 4, 1997
Scroll machine with reverse rotation protection
COPELAND CORP123 citations97
US5475986ADec 19, 1995
Microprocessor-based control system for heat pump having distributed architecture
COPELAND CORP115 citations97
US5440890AAug 15, 1995
Blocked fan detection system for heat pump
COPELAND CORP118 citations97
US5427511AJun 27, 1995
Scroll compressor having a partition defining a discharge chamber
COPELAND CORP102 citations97
US5076067ADec 31, 1991
Compressor with liquid injection
COPELAND CORP167 citations97
Showing the top 50 of 269 patents by PatentIndex Score.