| Patents for F24F 3 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems (19,462) |
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| 08/01/1990 | EP0380037A2 Apparatus and method for establishing selected environmental characteristics |
| 08/01/1990 | CN1044330A 加湿器 Humidifier |
| 07/31/1990 | CA1272141A1 Air purification system |
| 07/24/1990 | US4942921 Forced air ventilation system |
| 07/24/1990 | US4942740 Air conditioning and method of dehumidifier control |
| 07/17/1990 | US4941324 Hybrid vapor-compression/liquid desiccant air conditioner |
| 07/12/1990 | CA2024103A1 Removal of an antigenic substance from a fluid |
| 07/11/1990 | CN1043782A Air cooling method by indirect evaporation |
| 07/11/1990 | CN1008768B Air conditioning system for buildings |
| 07/10/1990 | US4940475 Variable capacity evaporative humidifier |
| 07/10/1990 | US4939906 Multi-stage boiler/regenerator for liquid desiccant dehumidifiers |
| 07/04/1990 | EP0375734A1 An air conditioning apparatus, especially for regulating the flow of cold and warm air or a mixture thereof |
| 07/04/1990 | EP0210243B1 Air temperature control device for a vehicle |
| 07/04/1990 | CN2058968U Evaporating condensing air condition without outdoor device |
| 07/03/1990 | US4938032 Air-conditioning system |
| 06/27/1990 | EP0375343A2 Sterile air trolley |
| 06/27/1990 | CN1043381A Air-conditioning system using underground water as coolant |
| 06/27/1990 | CN1043380A Air-conditioning apparatus |
| 06/26/1990 | US4936922 High-purity cleaning system, method, and apparatus |
| 06/21/1990 | DE3937863A1 Gas adsorption element - comprising a matrix, charcoal, a metal silicate-aerogel, and alumina |
| 06/20/1990 | CN2058469U Air clarifier with dustproof, and toxic gas filtering function |
| 06/14/1990 | WO1990006476A1 Personal environmental module |
| 06/14/1990 | WO1990006165A1 A method and apparatus for drying air |
| 06/13/1990 | EP0372784A2 Apparatus for providing a clean air zone |
| 06/13/1990 | CN1008397B Multi-purpose flexible clean room system |
| 06/07/1990 | DE3915748C1 Waste gas purificn. appts. from solid particles - comprises candle mounting plate below hood, protection plate inside in hood with central ventilation passage, etc. |
| 06/06/1990 | CN2057995U Infrared clean humidifier |
| 06/05/1990 | USH785 Decontamination apparatus and method |
| 06/05/1990 | US4930322 Advanced heat pump |
| 05/31/1990 | WO1990005549A1 Clean air cabinets |
| 05/30/1990 | EP0370540A1 Device for removal of ozone from and simultaneously moistening of air |
| 05/30/1990 | EP0370044A1 An arrangement for transporting air. |
| 05/29/1990 | US4929262 Down draft re-circulating system |
| 05/29/1990 | US4928750 VaV valve with PWM hot water coil |
| 05/23/1990 | EP0368876A1 Treatment of air conditioning system. |
| 05/23/1990 | CN1042308A Health promoting, refreshing, and fragrant oxygen and its preparation |
| 05/22/1990 | US4927438 Horizontal laminar air flow work station |
| 05/22/1990 | US4926649 Method and apparatus for saving energy in an air conditioning system |
| 05/22/1990 | US4926618 Industrial dehumidifier |
| 05/16/1990 | EP0368435A2 Dehumidified air generator employing adsorbent |
| 05/16/1990 | CN2057270U Ionic ventilator |
| 05/15/1990 | US4926293 Lighting and air freshener fixture |
| 05/15/1990 | US4924939 Heat-exchanging member of a dehumidifier |
| 05/15/1990 | US4924934 Rotary heat wheel cassette assembly |
| 05/15/1990 | US4924762 Solar powered air filter system |
| 05/09/1990 | CN2056980U Multifunctional blast cabinet suitable for four season |
| 05/08/1990 | US4922726 Heat pump system |
| 05/08/1990 | CA1268636A1 Air conditioning means and method |
| 05/01/1990 | US4921164 Central air conditioning system with damper and method for controlling the same |
| 04/26/1990 | DE3836147A1 Clean-room ceiling |
| 04/25/1990 | EP0364908A2 Use of a hygroscopic diluted solution of salt for adsorption cooling/air conditioning with low temperature heat |
| 04/25/1990 | EP0364834A2 Air conditioning device |
| 04/24/1990 | US4919693 Electrostatic air cleaner |
| 04/24/1990 | US4919327 Air-processing installation designed for the ventilation and air-conditioning of several rooms and air-processing module designed for an installation of this type |
| 04/24/1990 | US4919197 Atmosphere control apparatus for theaters |
| 04/24/1990 | US4918935 Fluidic flow control |
| 04/18/1990 | EP0364381A1 Device for conditioning internal air |
| 04/18/1990 | CN2056228U Air-cooled cold water machine set |
| 04/18/1990 | CN2056222U Evaporation cooled air conditioner |
| 04/17/1990 | US4917713 Low-profile air filtration module |
| 04/17/1990 | US4917174 Supply airflow control for dual-duct system |
| 04/17/1990 | US4917004 Robot traveling duct for clean room |
| 04/17/1990 | US4916913 Air conditioning apparatus having two refrigerating circuits in central unit and control method of defrosting the same |
| 04/11/1990 | EP0191801B1 Residential heating, cooling and energy management system |
| 04/11/1990 | CN2055916U Multiple effect air purification machine |
| 04/10/1990 | US4915838 Membrane dehumidification |
| 04/10/1990 | US4915715 Humidity conditioner |
| 04/10/1990 | US4915294 System for monitoring and equalizing temperature in multi-story buildings |
| 04/04/1990 | EP0361534A2 Means for controlling the condition of air in an enclosure |
| 03/29/1990 | DE3832915A1 Clean room |
| 03/28/1990 | EP0360752A2 Apparatus for dehumidifying gas |
| 03/28/1990 | CN1040862A Water type air conditioner |
| 03/27/1990 | US4911775 Method of manufacturing dehumidifier element |
| 03/27/1990 | US4911737 Generating an electrostatic field |
| 03/27/1990 | US4910971 Indirect air conditioning system |
| 03/21/1990 | EP0359095A2 Thermoconvector with purifier and ioniser |
| 03/20/1990 | US4909307 Regenerative bed heat exchanger |
| 03/14/1990 | CN1007175B Method and equipment for controlling air condition in hothouse |
| 03/14/1990 | CN1007170B Method for electrode indoor damp-removing |
| 03/08/1990 | WO1990002297A1 Damper-regulating arrangement for induction apparatus with cooling and heating batteries |
| 03/08/1990 | WO1990002295A1 Indirect-evaporation air cooling method |
| 03/07/1990 | CN1007086B Air-conditioning equipment |
| 03/06/1990 | US4906178 Self-powered gas appliance |
| 03/06/1990 | US4905894 Refrigerant heating type air conditioner |
| 03/06/1990 | US4905578 Apparatus for ventilating controlled areas |
| 03/06/1990 | US4905480 Draining device and the use thereof |
| 03/06/1990 | US4905479 Hybrid air conditioning system |
| 03/06/1990 | US4905475 Personal comfort conditioner |
| 02/28/1990 | EP0355765A2 Method of inhibiting the spread of disease and infection in structures |
| 02/28/1990 | EP0355703A2 Method and apparatus for improving a life supporting environment with exhaled ingredients of living plants |
| 02/28/1990 | EP0355517A2 Laminar flow generating device |
| 02/28/1990 | EP0355106A1 A rotatable heat exchanger. |
| 02/27/1990 | US4903584 Deodorizing air vent attachment |
| 02/27/1990 | US4903583 Aerosol air and duct treatment apparatus for air conditioning and heating systems |
| 02/27/1990 | US4903503 Air conditioning apparatus |
| 02/27/1990 | CA1266200A1 Air filtering and distribution for laminar flow clean room |
| 02/21/1990 | CN1039732A Dehumidifier |
| 02/20/1990 | US4902322 Supplemental air conditioning system for building |
| 02/15/1990 | DE3826925A1 Installation for handling and treating contamination-sensitive objects, such as semiconductor parts (wafers) or similar products |
| 02/13/1990 | US4900448 Concentration gradient across a transfer medium of organic fibers |