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3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 6997242 | Reservoir with hydrogen storage material An HM reservoir for storing hydrogen includes a housing and a plurality of storage units. The storage units are stacked in the interior of the housing. Each storage unit includes a pair of plate-like molded bodies and a flat heat exchanger. The plate-like molded bod... | 02/14/2006 |
| 6892798 | Rapid thermal storage/release system using a porous member A heat exchanger for storing or releasing heat including a channel unit in which a heat medium flows; and a heat exchange unit contacted-combined with the channel unit and containing a porous heat transfer member which conducts heat exchange with a thermal storage m... | 05/17/2005 |
| 6829902 | Self-cooling can A self-cooling can (10) which is suitable for cooling 300 ml of beverage by 30° F. in a maximum of 3 minutes comprises an internal evaporator (30) and an absorber unit (20) which is fixed typically to the base of the can. Cooling is initiated b... | 12/14/2004 |
| 6823931 | Hydrogen cooled hydride storage unit incorporating porous encapsulant material to prevent alloy entrainment A hydrogen gas cooled hydrogen storage element which includes a hydrogen storage alloy material in which hydrogen flow channels are provided. The flow channels provide pathways through the hydrogen storage material to allow for high speed hydrogen gas flow. A portio... | 11/30/2004 |
| 6820441 | Adsorption cooling apparatus with buffer reservoir Adsorption cooling apparatus with an intermittently heated adsorbent container (12) containing an adsorbent (19) that exothermically adsorbs a working medium during an adsorption phase and again desorbs at higher temperatures while heat is added during... | 11/23/2004 |
| 6736194 | Heat and mass transfer apparatus and method for solid-vapor sorption systems A sorber heat exchanger is provided with a substrate material incorporating a sorbent for reacting with a polar gas refrigerant or hydrogen. A preferred sorbent is a metal salt capable of reacting with the polar gas refrigerant to form a complex compound. The sorben... | 05/18/2004 |
| 6520249 | Low-temperature waste-heat-gas driven refrigeration system High-temperature-side hydrogen storage alloy containers each containing a hydrogen storage alloy are disposed as a heat exchanging portion in high-temperature-side heat exchangers. Low-temperature waste-heat gas generated in a micro gas turbine is importe... | 02/18/2003 |
| 6378601 | Hydrogen cooled hydrogen storage unit having a high packing density of storage alloy and encapsulation A hydrogen cooled hydrogen storage unit. The unit employs excess hydrogen flow between hydrogen storage alloy rods in the hydrogen storage unit in order to provide convective cooling thereof. The unit provides for high packing density of the storage mater... | 04/30/2002 |
| 6360811 | Hydrogen absorption indirect heat exchanger A case for a hydrogen absorption indirect heat exchanger of the present invention includes a square cylindrical portion 11 having each portion thereof formed integrally by die-casting or extrusion molding. The corners 11a of this square cylindrical portio... | 03/26/2002 |
| 6318453 | Hydrogen cooled hydrogen storage unit having maximized cooling efficiency A hydrogen cooled hydrogen storage unit which employs excess hydrogen flow through flow channels between hydrogen storage alloy plates in order to provide convective cooling of the plates. The unit provides for high packing density of the storage material... | 11/20/2001 |
| 6257322 | Indirect heat exchanger filled with solid-gas reaction powdery particles In a heat-exchange unit 1a constituting a chief portion of an indirect heat exchanger 1, the streams of hot medium that flow through many small flow passages 20 in the flat tubes 2 in the upstream heat-exchange set 5, meet together in the tubular headers ... | 07/10/2001 |
| 5862855 | Hydride bed and heat pump A hydride bed structure includes a first and second set of separated hydride modules within a single hydrogen containing, sealed tank. Each set contains a hydride having a different equilibrium disassociation characteristic. Each set is thermally isolated... | 01/26/1999 |
| 5676202 | Heat exchanger In a heat exchanger according to the present invention, there are provided a filling container having a first containing section containing a hydrogen-absorbing metal material for middle or high temperature, a second containing section containing a hydrog... | 10/14/1997 |
| 5661982 | Electronic refrigerant compressor for a cooling system An electronic refrigerant compressing apparatus comprises two or more compressing portions coupled in parallel to one another, which repeats the heating and cooling of the refrigerant circulating the refrigerant cycle at an interval of a predetermined tim... | 09/02/1997 |
| 5526648 | Sorption device and method of operating same for electric driven vehicle air conditioning The invention relates to a sorption method for air-conditioning vehicles, especially electric vehicles, and a device for working the method. To achieve rapid cooling or heating by means of vehicle air conditioning while achieving improved manufacturing, c... | 06/18/1996 |
| 5309985 | Stationary continuous multimodular trisorption heat pump Apparatus and process are disclosed for sorption heat pumping at high efficiency in a smooth and continuous manner using a multiplicity of stationary triplex sorption modules. The hermetically sealed trisorption modules, each of which contains at least tw... | 05/10/1994 |
| 5289695 | Adsorption cooling device and method for hazardous materials suits A relatively lightweight cooling device and method utilizing adsorption of perspirated water vapor to permit evaporative cooling of a person wearing a sealed suit for defined time periods. The device can be constructed in the form of a rectangular pad or ... | 03/01/1994 |
| 5272891 | Intermittent sorption cycle with integral thermosyphon Intermittent sorption cycles with fixed heat supply and removal and comprised of a generator/absorber (4), a condenser (2), and a receiver/evaporator (10) are adapted and simplified so as to require at most only two control valves (8) and (15) for their o... | 12/28/1993 |
| 5271239 | Cooling apparatus for electronic and computer components Apparatus for cooling components or subassemblies of equipment at one or more locations comprises one or more first and one or more second reactors, remote from said equipment, each reactor containing a complex compound of a polar refrigerant and a metal ... | 12/21/1993 |
| 5249436 | Simplified, low cost absorption heat pump A simplified, low cost absorption heat pump includes a single pressure vessel having first and second insulated compartments in unrestricted fluid communication with one another and containing, hermetically sealed, a working medium. A heat transfer ar is ... | 10/05/1993 |
| 5197302 | Vacuum insulated sorbent-driven refrigeration device Disclosed is a self-contained, rapid cooling device that retains heat produced from the cooling process and can be stored for indefinite periods without losing its cooling potential. A liquid in a first chamber undergoes a change of phase into vapor which... | 03/30/1993 |
| 5113666 | Cooling device for hazardous materials suits A relatively lightweight cooling device utilizing adsorption of perspirated water vapor to permit evaporative cooling of a person wearing a sealed suit for defined time periods. The device can be constructed in the form of a rectangular pad or the like ha... | 05/19/1992 |
| 5111668 | Cooling device and method for hazardous materials suits A relatively lightweight cooling device and method utilizing adsorption of perspirated water vapor to permit evaporative cooling of a person wearing a sealed suit for defined time periods. The device can be constructed in the form of a rectangular pad or ... | 05/12/1992 |
| 4993234 | Solar collector absorption cooling system A solar collector absorption cooling system with a primary cooling circuit the evaporator (1) of which is connected with absorber ducts (26) in an absorber formed as a solar collector (12), said absorber ducts (26) including a coolant absorbing compound f... | 02/19/1991 |
| 4974419 | Apparatus and method for simultaneously heating and cooling separate zones Disclosed is a device for simultaneously heating and cooling adjacent food portions. A first module defining a first hollow chamber is formed into a substantially planar surface for supporting the food portion to be cooled. The first chamber contains a va... | 12/04/1990 |
| 4823864 | Chemical energy storage system A system for storing chemical energy comprises first and second vessels, the first containing a liquid solution of an alkali or alkaline earth metal hydroxide, halide, or thiocyanate, or ammonium halide or thiocynate at an initial concentration of between... | 04/25/1989 |
| 4819446 | Waste heat cooling apparatus A waste heat powered cooling apparatus utilizes a waste heat collector to convert wasted energy into heat stored in water. An evacuated chamber houses a desiccant bed and a sprayer which introduces an adsorbate into contact with a heat exchanger conduit e... | 04/11/1989 |
| 4784217 | Thermochemical method and device for storing and unstoring heat Thermotransformer for storing and unstoring heat with a double raise in thermal potential by performing thermo-chemical processes that present Clapeyron curves that intersect in the temperature range involved, this device being applicable to heat pumps an... | 11/15/1988 |
| 4752310 | Adiabatic heating and cooling process and portable devices in accordance with the adsorption principle The invention describes portable cooling and heating devices and their process of operation in accordance with the adsorption principle utilizing the adsorption substance pair of zeolite-water. The devices operate without substance and heat exchange from ... | 06/21/1988 |
| 4744224 | Intermittent solar ammonia absorption cycle refrigerator Refrigeration is produced by an intermittent absorption cycle. The cycle is driven by solar radiation, and utilizes NH3 as refrigerant and a liquid, preferably H2 O, as absorbent. Referring to FIG. 1, solar radiation is collected dur... | 05/17/1988 |
| 4742868 | Regenerative heating apparatus A regenerative heating apparatus includes a radiating container and an adsorbent contained in the container. The adsorbent adsorbs vapor to generate heat when touched by the vapor, and releases the adsorbed vapor when heated. A heater for heating the adso... | 05/10/1988 |
| 4703629 | Solar cooling apparatus A solar powered cooling apparatus utilizes a solar collector to convert radiant energy into heat stored in water. An evacuated chamber houses a dessicant bed and a sprayer which introduces an adsorbate into contact with a heat exchanger conduit extending ... | 11/03/1987 |
| 4697433 | Thermal energy collector A thermal energy collector, intended for a system such as a cooling system of the solar type whose mode of operation includes a phase consisting of adsorption of a fluid by a given material and a subsequent desorption phase, comprises a compartment having... | 10/06/1987 |
| 4682476 | Three-phase heat pump A thermochemical heat pump for the transfer of calories between two calorie sources (1, 4) and (2, 5). The heat pump embodies a monovariant system for which the relationship between the logarithm of the pressure and 1/T is singular and quasi-linear. Appli... | 07/28/1987 |
| 4589479 | Hot water supply unit The disclosure is directed to an improved hot water supply unit of a heat pump type which employs metal hydrides for less movable parts, simple construction, quiet operation and reduction in cost.... | 05/20/1986 |
| 4586345 | Solar energy powered system for the production of cold In a system for the production of cold comprising an absorption cooling system with an evaporator (1) from which coolant is supplied in the vapor state through an absorber (12) to a condenser (8), from which coolant is supplied in the liquid state to a co... | 05/06/1986 |
| 4532778 | Chemical heat pump and chemical energy storage system A chemical heat pump and storage system employs sulfuric acid and water. In one form, the system includes a generator and condenser, an evaporator and absorber, aqueous acid solution storage and water storage. During a charging cycle, heat is provided to ... | 08/06/1985 |
| 4531384 | Solar-powered refrigeration unit The invention pertains to refrigeration units which operate by means of heat energy, and especially solar energy, wherein the mode of operation consists of a desorption phase and an adsorption phase. The energy collector (8) contains a material (10) with ... | 07/30/1985 |
| 4523635 | Metal hydride heat pump system A metal hydride heat pump system has a plurality of operating units, the metal hydride heat exchange medium of each operating unit be a combination of a first metal hydride having a lower equilibrium dissociation pressure at the operating temperature and ... | 06/18/1985 |
| 4223539 | Apparatus for absorbing a vapor in a liquid and absorption refrigeration system incorporating same Apparatus and method are disclosed for absorbing a subject vapor in an absorbent liquid wherein an additive is provided which exists in at least a vapor phase concurrently with the subject vapor, which additive is effective to reduce the surface tension o... | 09/23/1980 |
