Assignee
LANDIS & GYR POWERS INC
US·24 granted patents·1,158 citations·filing 1990–1995
Top patents by PatentIndex Score
24 records- 0195US5439414ANetworked fume hood monitoring systemLANDIS & GYR POWERS INC·Filed 1993·Granted Aug 8, 1995·101 cites·21 claims
- 0294US5090303ALaboratory fume hood control apparatus having improved safety considerationsLANDIS & GYR POWERS INC·Filed 1990·Granted Feb 25, 1992·85 cites·12 claims
- 0393US5579993AHVAC distribution system identificationLANDIS & GYR POWERS INC·Filed 1995·Granted Dec 3, 1996·126 cites·8 claims
- 0491US5115728ASystem for controlling the differential pressure of a room having laboratory fume hoodsLANDIS & GYR POWERS INC·Filed 1990·Granted May 26, 1992·70 cites·8 claims
- 0590US5573181AGlobal control of HVAC distribution systemLANDIS & GYR POWERS INC·Filed 1995·Granted Nov 12, 1996·85 cites·24 claims
- 0689US5592989AElectronic thermostat having high and low voltage control capabilityLANDIS & GYR POWERS INC·Filed 1994·Granted Jan 14, 1997·83 cites·16 claims
- 0788US5562537ANetworked fume hood monitoring systemLANDIS & GYR POWERS INC·Filed 1995·Granted Oct 8, 1996·112 cites·4 claims
- 0887US5518446AFume hood exhaust terminalLANDIS & GYR POWERS INC·Filed 1994·Granted May 21, 1996·57 cites·11 claims
- 0985US5092227AApparatus for controlling the ventilation of laboratory fume hoodsLANDIS & GYR POWERS INC·Filed 1990·Granted Mar 3, 1992·78 cites·31 claims
- 1083US5528215ABuilding automation system having expansion modulesLANDIS & GYR POWERS INC·Filed 1994·Granted Jun 18, 1996·98 cites·10 claims
- 1182US5170673AMethod and apparatus for determining the uncovered size of an opening adapted to be covered by multiple moveable doorsLANDIS & GYR POWERS INC·Filed 1990·Granted Dec 15, 1992·48 cites·9 claims
- 1270US5460202AThree-way piezoelectric valveLANDIS & GYR POWERS INC·Filed 1993·Granted Oct 24, 1995·29 cites·30 claims
- 1364USD350532SEnclosure for the controller of a unit ventilatorLANDIS & GYR POWERS INC·Filed 1991·Granted Sep 13, 1994·11 cites·1 claims
- 1461US5540619AControl of prime mover in HVAC distribution systemLANDIS & GYR POWERS INC·Filed 1995·Granted Jul 30, 1996·26 cites·14 claims
- 1560US5470275AMethod and apparatus for controlling fume hood face velocity using variable by-pass resistanceLANDIS & GYR POWERS INC·Filed 1993·Granted Nov 28, 1995·28 cites·15 claims
- 1655US5207737AAnalog output electro-pneumatic transducerLANDIS & GYR POWERS INC·Filed 1992·Granted May 4, 1993·17 cites·22 claims
- 1752US5295334ASash sensor base plate assemblyLANDIS & GYR POWERS INC·Filed 1991·Granted Mar 22, 1994·24 cites·2 claims
- 1851US5090304AApparatus for determining the position of a moveable structure along a trackLANDIS & GYR POWERS INC·Filed 1990·Granted Feb 25, 1992·18 cites·17 claims
- 1950USD359244SThermostat coverLANDIS & GYR POWERS INC·Filed 1994·Granted Jun 13, 1995·6 cites·1 claims
- 2048US5350113AAir flow control system and method for a dual duct systemLANDIS & GYR POWERS INC·Filed 1993·Granted Sep 27, 1994·17 cites·8 claims
- 2140US5347754APosition sensing apparatusLANDIS & GYR POWERS INC·Filed 1993·Granted Sep 20, 1994·9 cites·25 claims
- 2240US5207379ACascaded control apparatus for controlling unit ventilatorsLANDIS & GYR POWERS INC·Filed 1991·Granted May 4, 1993·17 cites·91 claims
- 2332US5323961AApparatus for controlling unit ventilatorsLANDIS & GYR POWERS INC·Filed 1993·Granted Jun 28, 1994·11 cites·27 claims
- 2424US5174333AOutput pressure control apparatusLANDIS & GYR POWERS INC·Filed 1991·Granted Dec 29, 1992·2 cites·42 claims
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