...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8181474 | Solar-powered air conditioner using a mixture of glycerin, alcohol and water to store energy A solar-powered air conditioning system including an energy-storage medium made of a mixture of 5%-20% glycerin, 2.5%-10% alcohol and water in a thermally insulated container is disclosed. While frozen, the said energy storage medium becomes slurry of thin sheets of... | 05/22/2012 |
| 8056350 | Cooling apparatus for air conditioning and heat pumps An apparatus for cooling, comprising: a liquid pump for transport of fluid through a heating cycle, an external heat source for heating the fluid in the heating cycle, for example a solar heater directly connected to the heating cycle or connected through a heat exc... | 11/15/2011 |
| 8020396 | Heat pump system Embodiments of the invention relate to a heat pump system comprising a heat pump so arranged as to permit the taking up of thermal energy from outdoor air and the giving off of thermal energy to another medium, and an external space adapted to permit heating of the ... | 09/20/2011 |
| 7866176 | Autonomous water source An autonomous water source for extracting water from ambient air and delivering it to a plant to support growth. The system is based on an adsorption-desorption-condensation cycle using a sorption material to extract moisture from ambient air and condensing the wate... | 01/11/2011 |
| 7827814 | Geothermal water heater The present invention relates to a geothermal water heater system, and methods of heating water for domestic uses utilizing geothermal energy. More specifically, the present invention provides a geothermal heat pump water heater system includes a hot water tank, a c... | 11/09/2010 |
| 7543455 | Solar-powered refrigerator using a mixture of glycerin, alcohol and water to store energy A solar-powered refrigerator is disclosed. It uses a solar photovoltaic panel to convert solar energy to electricity to power a DC motor. The DC motor drives the compressor of a vapor-compression refrigeration system to freeze an energy-storage vessel, located in th... | 06/09/2009 |
| 7481070 | Solar powered chilled cooler A novel portable insulated cooler unit at least includes: a plurality of coolant lines embedded in a plurality of walls of the cooler unit, the coolant lines at least including coolant fluid; a compressor coupled to the coolant lines; a fan adapted to circulate air ... | 01/27/2009 |
| 7451611 | Solar air conditioning system A solar air-conditioning system that is preferably designed to operate with concentrated solar heat and uses a circulating refrigerant in a cycle of compression and expansion. Solar concentrators raise the temperature and pressure of the refrigerant. The raised temp... | 11/18/2008 |
| 7426836 | Method and apparatus for air conditioning using a primary and an ancillary power source A method for air conditioning using a primary power source augmented with an ancillary power source which is accomplished by receiving a heat-laden first working fluid at an initial pressure; pre-pressurizing the heat-laden first working fluid to a pre-pressurizatio... | 09/23/2008 |
| 7404911 | Heat-transfer media having improved thermal stability and based on higher polyglycols The present invention relates to heat-transfer concentrates for solar installations, containing a) from 92 to 99% by weight of at least one polyglycol of the formula R—O—(CH2—CH2—O)n—H, in which n is an integer... | 07/29/2008 |
| 7343754 | Device for collecting atmospheric water The present invention is directed at a water collection device which condenses water vapour in atmospheric air to water. The device comprises means for drawing the atmospheric air into the device; means for condensing the moisture vapour in the atmospheric air into ... | 03/18/2008 |
| 7340899 | Solar power generation system An economical solar generator system is provided wherein the solar energy collector is constructed from a plurality of heat exchangers of the kind used as evaporators in automobile air conditioners. The solar generator system includes a plurality of said heat exchan... | 03/11/2008 |
| 7310960 | Transcritical heat pump water heater with drainage A water heater is provided by a refrigerant cycle, in which the gas cooler is utilized to heat the water. A drain is incorporated into a water circuit for draining all of the water outwardly of the circuit when the system is shut down. In a preferred embodiment, a w... | 12/25/2007 |
| 7287398 | Heating/cooling system for indwelling heat exchange catheter A cooling system for an indwelling heat exchange catheter includes a heat exchange bath that is configured to receive a conduit that carries saline to and from the catheter. A heating/cooling fluid is in the bath and exchanges heat with the saline. The heating/cooli... | 10/30/2007 |
| 7278475 | Control arrangement for cooling power electronic components A control arrangement (10) comprises a first selectable controller (12) for controlling an action, and a second selectable controller (14) for controlling the action. The arrangement also includes a selector (22) for selecting one of the ... | 10/09/2007 |
| 7234314 | Geothermal heating and cooling system with solar heating A sealed well direct expansion geothermal heat exchange unit, whose sealed well can be placed in ground and/or in water, consisting of a conventional direct expansion, or other heat pump, system wherein the exterior refrigerant heat exchange lines are placed within ... | 06/26/2007 |
| 7191604 | Heat pump dehumidification system A heat pump dehumidification system comprised of one of an air source heat pump system, a water source heat pump system, and a direct expansion heat pump system, with an extra interior air heat exchange means situated between the system's compressor's hot refrigeran... | 03/20/2007 |
| 7152413 | Thermal energy transfer unit and method A thermal energy transfer unit is provided for conventional Freon air conditioning. One or several thermal energy transfer units are operatively interconnected to one or several conventional air condition systems and share a common energy storage tank. Each thermal ... | 12/26/2006 |
| 7146823 | Horizontal and vertical direct exchange heating/cooling system sub-surface tubing installation means A sub-surface geothermal direct exchange sub-surface tubing installation means, comprising situating certain specified tubing sizes for certain specified horizontal distances and for certain specified depths within each of a horizontally oriented trench and a vertic... | 12/12/2006 |
| 7143762 | Method and apparatus for solar collector with integral stagnation temperature control This invention relates to a method and apparatus for a solar collector having intergral control of the the maximum temperature that it can reach, thereby avoiding excessive stagnation temperatures in the collector. In one embodiment, a solar collector comprises a to... | 12/05/2006 |
| 7143597 | Indirect-direct evaporative cooling system operable from sustainable energy source Improved means for powering and increasing evaporative cooling in an indirect-direct evaporative cooling (IDEC) apparatus are disclosed. Sustainable energy from solar energy mixed with grid power, when needed, power the IDEC device. These DC and AC power sources are... | 12/05/2006 |
| 7117691 | Device for controlling liquid level position within condenser in rankine cycle apparatus In a liquid-level-position control device for a condenser in a Rankine cycle apparatus, first and second reference liquid level positions are set. When a position of the fluid level is lower than the first reference liquid level position, water is replenished to a c... | 10/10/2006 |
| 7106012 | Electronic control unit, electric power-assisted steering device and transmission ratio-variable steering unit An electronic control unit for producing a sufficiently boosted voltage even when a supply voltage becomes high includes an inverter that drives switching elements and converts a DC voltage into an AC voltage, and booster means which boosts a DC voltage that is inpu... | 09/12/2006 |
| 7089753 | Cooling member for a mobile ice rink and method for using such a cooling member A cooling member for a mobile ice rink includes a feed manifold extending in a transverse direction and a discharge manifold, and a number of longitudinal pipes which extend transversely to the manifolds and can be connected at a first end to a manifold, two longitu... | 08/15/2006 |
| 7073566 | Ventilation system An apparatus for ventilation systems includes an element for the transfer of heat from warm exhaust air (taken from inside a building) to cooler exterior fresh air which is drawn into the building. The present invention in particular provides an apparatus whereby, d... | 07/11/2006 |
| 7051548 | Air conditioner A process and the required apparatus for air conditioning the interior of a structure located within a harsh desert like exterior environment. The air conditioning system is particularly effective at times when the exterior temperature is in excess of approximately ... | 05/30/2006 |
| 7040108 | Ambient thermal energy recovery system A method and system for recovering thermal energy from an ambient environment includes an evaporator plate assembly located in the ambient environment, such as outdoors to absorb thermal energy from air. A compressor, heat exchanger, and water storage tank are locat... | 05/09/2006 |
| 7028685 | Air conditioning system for buildings and air-conditioned building, especially a zero energy house A method of air-conditioning a building with low heat loss, having the following steps: providing a fresh-air/outgoing-air system for feeding fresh air through a heat accumulator being located beneath said building and extracting said outgoing air through the heat a... | 04/18/2006 |
| 7024876 | Portable cooling unit A portable cooling unit for cooling the interior of an automobile, comprising a cooling device and an associated remote control unit. The cooling device has a number of solar cell panels located on its upper surface for converting the rays of sunlight into electrica... | 04/11/2006 |
| 7007742 | Method and system for pre-heating water A system and method for pre-heating water prior to entering a hot water heater is disclosed. The system includes: a cold water supply line; an ambient air heat exchange device positioned within an insulated area of a building wherein the ambient air heat exchange de... | 03/07/2006 |
| 6945063 | Apparatus and method for harvesting atmospheric moisture An atmospheric water harvester extracts water from high relative humidity air. The temperature of the surface of a condensation member is lowered in the presence of moist air to promote condensation of water vapor on its surface, and the water so obtained by condens... | 09/20/2005 |
| 6941759 | Solar power enhanced combustion turbine power plants and methods Combustion turbine power plants and methods of operating the same are provided in which air is cooled using solar energy and supplied to an air inlet of the power plant to support combustion. Also, combustion turbine power plants and methods of operating the same ar... | 09/13/2005 |
| 6904768 | Absorption-type air conditioner system An absorption-type air conditioner system using lithium bromide solution as absorbent is provided, which has a small volume and compact structure. The system includes upper vessel 26, lower vessel 27, cooling heat exchanger 10, self-induced air ... | 06/14/2005 |
| 6883588 | Spacecraft radiator system using a heat pump Heat dissipating apparatus or system for dissipating heat generated by a payload on a spacecraft having a plurality of surfaces. The system includes at least one radiator-condenser coupled to one or more of the surfaces of the spacecraft and a heat pump including an... | 04/26/2005 |
| 6828499 | Apparatus and method for harvesting atmospheric moisture A condensation panel to be used for harvesting water from atmospheric moisture during those times of the diurnal cycle when relative humidity is at or near 100% utilizes very localized cooling to optimize condensation on a surface whose materials promote the condens... | 12/07/2004 |
| 6820420 | Solar-based power generating system A solar-based power generating system including an electrical alternator or generator for generating electrical power in which the alternator or generator is driven by a refrigerant circulating through a closed-loop heat transfer system including an evaporator expos... | 11/23/2004 |
| 6775999 | Solar reflector for heat pump evaporator A solar reflector for an evaporator in a heat pump system. The evaporator has heat transfer plates and is located in an outdoor environment. The solar reflector has a curved surface configured to reflect solar radiation to the heat transfer plates of the evaporator.... | 08/17/2004 |
| 6662572 | Solar powered automobile interior climate control system There is provided a climate control system for a parked vehicle that includes a solar panel, thermostatic switch, fans, and thermoelectric coolers. The solar panel can serve as the sole source of electricity for the system. The system affords convenient i... | 12/16/2003 |
| 6626003 | Process for auxiliary air conditioning of a motor vehicle Process for air conditioning of the passenger compartment of a motor vehicle by means of an air conditioning system (7) using solar power which is obtained via at least one solar module (1) which is attached to the motor vehicle, especially on the motor v... | 09/30/2003 |
| 6615601 | Sealed well direct expansion heating and cooling system A sealed well direct expansion geothermal heat exchange unit, whose sealed well can be placed in ground and/or in water, consisting of a conventional direct expansion, or other heat pump, system wherein the exterior refrigerant heat exchange lines are pla... | 09/09/2003 |