Famous Patents
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 |
| 8138873 | Permanent magnet device A magnet arrangement for creating a magnetic field. The magnet arrangement includes a first magnet having a first surface defining a first pole and a second surface defining a second pole opposite the first pole, and a second magnet having a third surface defining a... | 03/20/2012 |
| 8128869 | Air sanitization system with variable speed fan An air sanitization system including a reactive oxygen species generator, a variable speed fan, a pathogen sensor and a controller. The reactive oxygen species generator generates reactive oxygen species from an oxygen-containing gas and discharges the reactive oxyg... | 03/06/2012 |
| 8070305 | Mullion assembly for a refrigerated merchandiser A refrigerated merchandiser including a case that defines a product display area adapted to support product. The case includes a frame that has at least one mullion assembly defining an opening into the product display area, and a door that is positioned over the op... | 12/06/2011 |
| 7997094 | Refrigerated merchandiser A refrigerated merchandiser that includes a case, a refrigeration system, at least one sensor, a controller, and a display. The refrigeration system is in communication with a product storage area of the case, and discharges a refrigerated airflow into the product s... | 08/16/2011 |
| 7992395 | Expansion valve with piezo material A method and system of controlling the temperature of a refrigeration system. In an embodiment, an expansion valve for a refrigeration system comprises an entry portion, an exit portion, and a flow control portion including a piezo material. The entry portion is con... | 08/09/2011 |
| 7905101 | Refrigerated merchandiser with glass door heat control A method of operating a refrigerated merchandiser. The refrigerated merchandiser includes a case that defines a product display area, and at least one door that provides access to the product display area. The method includes sensing a parameter of an ambient enviro... | 03/15/2011 |
| 7900467 | Combined receiver and heat exchanger for a secondary refrigerant A refrigeration system includes a first circuit configured to circulate a first refrigerant. The first circuit includes an evaporator. The refrigeration system also includes a second circuit configured to circulate a second refrigerant. The second circuit includes a... | 03/08/2011 |
| 7856770 | Multi-pane glass assembly for a refrigerated display case A glass assembly for a refrigerated display case. In some embodiments, the glass assembly includes a first pane having a first edge, a second pane substantially parallel to the first pane having a second edge substantially aligned with the first edge, and a third pa... | 12/28/2010 |
| 7824056 | Refrigerated merchandiser with LED lighting A light assembly for a refrigerated merchandiser that includes a case defining a product display area and that has at least one mullion. The light assembly includes a housing that is attachable to the mullion, a specular member that is coupled to the housing within ... | 11/02/2010 |
| 7813960 | System and method of generating service plans for refrigeration systems A service plan system includes a computer program with a plurality of modules operable to generate service plans for refrigeration systems customers. The service plans offer multiple coverage levels, as well as various co-pay options (e.g., lower monthly fixed payme... | 10/12/2010 |
| 7797957 | Methods and apparatus for linearized temperature control of commercial refrigeration systems Methods, systems, and apparatus for linearizing control of a commercial refrigeration system. In an embodiment of the invention, a controller is configured to receive a non-linear sensed suction pressure and convert the suction pressure to a linear temperature equiv... | 09/21/2010 |
| 7757505 | Predictive capacity systems and methods for commercial refrigeration A system and method in a commercial refrigeration system for compensating for events. A commercial refrigeration system includes a controller that predicts a first change in cooling capacity required based on at least one anticipated system event. The controller als... | 07/20/2010 |
| 7703295 | Modular refrigeration unit A modular refrigeration unit (12) for use in an accessible compartment (37) of a cooler. The modular refrigeration unit (12) includes a wire-frame support (50), a dividing wall (42) mounted to the wire-frame support (50), a ... | 04/27/2010 |
| 7628027 | Refrigeration system with mechanical subcooling A refrigeration system includes a primary compressor that receives refrigerant from an evaporator and delivers refrigerant to a condenser, a subcooling compressor that delivers refrigerant to the condenser, and a subcooler that receives refrigerant from the condense... | 12/08/2009 |
| 7617695 | Control method for variable capacity compressors A refrigeration system including a refrigeration circuit and a controller. The refrigeration circuit includes a plurality of variable capacity compressors arranged in parallel to compress a refrigerant. A second variable capacity compressor is started after a first ... | 11/17/2009 |
| 7617691 | Refrigeration system and method of operating the same A refrigeration system including a compressor, condenser, valve, and refrigeration branch, all of which is in fluid communication. The refrigeration branch includes an evaporator coil. The refrigeration system further includes a case adapted to be cooled by the evap... | 11/17/2009 |
| 7596958 | Refrigeration system with fiber optic sensing A refrigeration case monitoring system. In one embodiment, the refrigeration case monitoring system includes a first fiber optic cable, a second fiber optic cable, and a control system having a first sensing channel and a second sensing channel. The first fiber opti... | 10/06/2009 |
| 7574869 | Refrigeration system with flow control valve A control valve to regulate flow of refrigerant through a refrigeration system that includes a plurality of refrigerated display cases. Each of the plurality of display cases includes a dedicated evaporator that cools return air by at least partially evaporating a r... | 08/18/2009 |
| 7540164 | Refrigeration unit having a linear compressor A refrigeration merchandiser including at least one surface at least partially defining an environmental space adapted to accommodate a commodity. The merchandiser includes a linear compressor, a condenser, an expansion device, and an evaporator. The linear compress... | 06/02/2009 |
| 7497770 | Air louver for a refrigerated display case A louver for directing airflow in a refrigerated display case, and a refrigerated display case employing a louver. In some embodiments, the louver includes a plurality of fins positioned to define a plurality of channels therebetween through which airflow can be dir... | 03/03/2009 |
| 7478539 | Two-stage linear compressor A refrigeration system includes a two-stage linear compressor having a first piston disposed in a first cylinder and a second piston disposed in a second cylinder. The linear compressor is operable in an economizer cycle wherein the first piston operates as a first ... | 01/20/2009 |
| 7451607 | Method of control for a refrigerated merchandiser A method of controlling a refrigerated merchandiser. The method includes providing a case that defines a product display area and an air passage that has an inlet and an outlet, positioning an evaporator in the air passage to refrigerate the air, positioning a fan i... | 11/18/2008 |
| D580957 | Shelf for a refrigerated merchandiser | 11/18/2008 |
| 7421850 | Refrigeration system and method of operating the same A refrigeration system including an evaporator, a suction header in fluid communication with the evaporator, a compressor in fluid communication with the suction header, and a condenser in fluid communication with the compressor and the evaporator. The refrigeration... | 09/09/2008 |
| 7367198 | Method of control for a refrigerated merchandiser The present invention provides a refrigerated merchandiser including a case defining a product display area. The product display area defines a highest temperature zone and a lowest temperature zone. The merchandiser includes a first product simulator positioned in ... | 05/06/2008 |
| D560397 | Front ledge area for a refrigerated display case | 01/29/2008 |
| D560408 | Conically-shaped glass for an inside wedge-style display case | 01/29/2008 |
| 7320225 | Refrigeration system and method of operating the same A refrigeration system including a compressor, condenser, valve, and refrigeration branch, all of which is in fluid communication. The refrigeration branch includes an evaporator coil. The refrigeration system further includes a case adapted to be cooled by the evap... | 01/22/2008 |
| 7318321 | Open-front, roll-in refrigerated display case A refrigerated display case including a case having rear and bottom walls that are coupled together to at least partially define a product display area adapted to receive a wheeled cart containing food product. The bottom wall includes a cart support surface elevate... | 01/15/2008 |
| D555403 | Conically-shaped glass for an outside wedge-style display case | 11/20/2007 |
| 7270278 | Distributed intelligence control for commercial refrigeration A commercial refrigeration system including a compressor, a condenser, a valve, and an evaporator coil, all of which are in fluid communication. The refrigeration system further including a fixture adapted to be cooled by the evaporator coil, a system controller ope... | 09/18/2007 |
| 7240506 | Illuminated canopy for a refrigerated display case A refrigerated display case including a case that defines a product display area adapted to support and display food product to be visible from the front of the case. The case includes a canopy positioned above the product display area with at least one display pane... | 07/10/2007 |
| 7237398 | Refrigerated merchandiser with access for cleaning A refrigerated merchandiser adapted to display refrigerated products includes a case defining a product display area, a bottom shelf adapted to support the refrigerated products within the product display area, and a container removably coupled with the case at a lo... | 07/03/2007 |
| 7228691 | Refrigeration system and method of operating the same A refrigeration system including a compressor, condenser, valve, and refrigeration branch, all of which is in fluid communication. The refrigeration branch includes an evaporator coil. The refrigeration system further includes a case adapted to be cooled by the evap... | 06/12/2007 |
| D543561 | Refrigerated display case | 05/29/2007 |
| 7213405 | Two-stage linear compressor A refrigeration system includes a dual-piston linear compressor including a first piston disposed in a first cylinder and a second piston opposed to the first piston and disposed in a second cylinder. The first piston divides the first cylinder into a first suction ... | 05/08/2007 |
| 7181924 | Assembly method for a refrigerated display case A refrigerated display case for maintaining food product at a desired temperature. The refrigerated display case includes a case, a product display area, and a refrigeration system. The case includes a plurality of interconnected structural components including a fi... | 02/27/2007 |
| 7143605 | Flat-tube evaporator with micro-distributor A flat-tube evaporator and a refrigeration system including a flat-tube evaporator. The flat-tube evaporator can include an inlet manifold, an outlet manifold separated a distance from the inlet manifold, a distributor tube positioned within the inlet manifold and f... | 12/05/2006 |
| 7062932 | Refrigerated merchandiser with fan-powered rear discharge A refrigerated merchandiser includes a case defining a product display area and an air passage at least partially surrounding the product display area. The air passage directs refrigerated air to the product display area. The case also defines an air chamber separat... | 06/20/2006 |
| 7047753 | Refrigeration system and method of operating the same A refrigeration system including an evaporator, a suction header in fluid communication with the evaporator, a compressor in fluid communication with the suction header, and a condenser in fluid communication with the compressor and the evaporator. The refrigeration... | 05/23/2006 |
