Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 8058589 | Electric range The present invention relates to an electric range comprising a body (100) for defining an exterior, an upper plate (400) on a top of the body (100), a working coil (210) provided in the body (100) for generating an electromagnetic... | 11/15/2011 |
| 7573003 | Cooktop with temperature sensor In a cooktop with a cooktop panel, beneath which at least one heating element is disposed for heating up a cooking vessel to be placed on the cooktop panel, and with a temperature sensor for sensing the temperature of the cooktop panel, which temperature sensor is i... | 08/11/2009 |
| 7342329 | Power supply for electrical domestic appliances and domestic appliances for co-action with such a power supply The invention relates to a power supply for electrical domestic appliances, comprising: at least one connection to the mains electricity supply, and at least one connector for releasable electrical coupling of the power supply to a domestic appliance, wherein the po... | 03/11/2008 |
| 7326885 | Hot plate with stainless steel top A hotplate with a stainless steel top plate to support a vessel. The stainless steel top plate has an upper surface with a substantially centrally located depression having a depth and area generally sufficient to absorb upward crowning of the top plate when heated.... | 02/05/2008 |
| 7285757 | Bottom electric heating element systems and ovens A bottom electric heating element for an oven wherein the electric heating element is positioned in a recessed portion in the oven bottom and comprises at least one corrugated ribbon of conductive material partially embedded in an insulating base. A glass panel is p... | 10/23/2007 |
| 7173219 | Ceramic heaters An object of the present invention is to provide a heater having a ceramic substrate with a through hole formed therein so that the uniformity of temperature on the heating face of the substrate can be improved and the use life of the ceramic substrate can be improv... | 02/06/2007 |
| 7159644 | Food preparation and storage device A food storage and preparation device (10, 50, 100, 200) is provided for more rapidly cooling or heating a mass of food or other product contained within a storage pan. The device includes a plurality of air contact fins (20) which rapidly convey heat ... | 01/09/2007 |
| 7049552 | Ventilation system for a cooking appliance A cooking appliance includes a frame having a bottom wall for supporting heating elements and a peripheral side portion that extends from and about an outer periphery of the bottom wall so as to define a chassis upon which is arranged a cooktop. The peripheral side ... | 05/23/2006 |
| 7026580 | Adjustable exhaust flow for thermal uniformity A method and apparatus for adjusting exhaust flow, and the apparatus has a programmable exhaust control regulator generating a first input signal to a motor control circuit, an exhaust flow meter generating a second input signal to the motor control circuit and a mo... | 04/11/2006 |
| 7019268 | Wafer processing apparatus and method of use A system, apparatus, and method for thermal processing of substrates undergoing lithographic chemical processes is provided. The thermal processing system includes at least one heating element, a heat distributing plate, having a heating surface and being disposed i... | 03/28/2006 |
| 6998583 | Electric cooking apparatus and method of controlling the same An electric cooking apparatus and a method of controlling the same are disclosed. The electric cooking apparatus includes heating units, a switching unit, a current detecting unit and a control unit. The heating units each having a heating element and electrodes con... | 02/14/2006 |
| 6995344 | Cooking appliance The appliance has a cooking plate (10) and a radiant electric heater (2) having multiple heating zones (12, 14, 16) arranged substantially side-by-side. A temperature sensing assembly (34) incorporates an electrical component (42) ... | 02/07/2006 |
| 6942920 | Glass-ceramic plates and methods of fabricating them The invention relates to glass-ceramic plates, hotplates incorporating them and their fabrication process. The glass-ceramic plate of the invention is of the type having a bottom substrate layer and a top coating layer and is characterized in that the top coating la... | 09/13/2005 |
| 6924495 | Heat controlled ultraviolet light apparatus and methods of sanitizing objects using said apparatus A heat controlled ultraviolet light apparatus includes a source of ultraviolet light, a cover, and a heating or cooling element that heats/cools the space or gap between the ultraviolet light source and the cover. Accordingly, the ultraviolet light source may be mai... | 08/02/2005 |
| 6914221 | System and method for warming food The present invention relates to a system comprising at least one serving dish configured to support food and a power source which comprises at least one portable electrical power generating device. The power source provides power to heat the food. ... | 07/05/2005 |
| 6888110 | Method and device for detecting heating processes A method and the associated device for detecting cooking or boiling processes in a glass ceramic hob are described, to which power is supplied by a power supply by means of a heating element and said power is transmitted to the cooking vessel standing thereon. Durin... | 05/03/2005 |
| 6861619 | Method and apparatus for preparing semiconductor wafers for measurement A wafer-cleaning module can remove contaminants from a semiconductor wafer prior to measurement in a metrology tool. A heating chamber and heater plate of the cleaning module can be used to heat the wafer by conduction, while a separate cooling chamber can be used t... | 03/01/2005 |
| 6753509 | Cooktop with temperature sensor In a cooktop with a cooktop plate, in particular, made from glass ceramic, beneath which at least one heating element is disposed, for heating a cooking vessel to be placed on the cooktop plate, and having a temperature sensor for recording the temperature of the co... | 06/22/2004 |
| 6663009 | Gas cooker A gas cooker comprises temperature detection means for detecting the temperature of the bottom face of a pan and issuing a temperature signal and an heat control circuit for controlling the amount of heat issued from the gas burner based on said temperatu... | 12/16/2003 |
| 6624393 | Method and apparatus for preparing semiconductor wafers for measurement A wafer-cleaning module is disclosed for removing contaminants from a semiconductor wafer prior to measurement in a metrology tool. The cleaning module includes a heating chamber including a heater plate for heating the wafer by conduction. A separate coo... | 09/23/2003 |
| 6347535 | Heating apparatus and method When an object to be heated is heated without temperature nonuniformity in its heated surface, unwanted thermal deformation can be suppressed, and thermal processing precision can be improved. For this purpose, a heat transfer plate for heating a plate-li... | 02/19/2002 |
| 6072165 | Thin film metal/metal oxide thermocouple A thin film thermocouple having junctions (2, 7) of metal and semiconducting metal oxides such as tin oxide/silver, and used as surface temperature sensors in conjunction with thin film heating elements (1) to control temperature.... | 06/06/2000 |
| 6002115 | Control device for electric heating apparatus A temperature controller for an electrically operated cooking appliance which performs as a thermostatic controller at high temperatures and as a simmerstat or time dependent temperature controller at simmering temperatures.... | 12/14/1999 |
| 5855163 | Coffee brewer A single unit coffee brewer for simultaneous brewing of two different types of coffee which utilizes carafes that in appearance resemble a single carafe but in actuality are constructed of two separate carafes. Each carafe receives brewed coffee from a se... | 01/05/1999 |
| 5635093 | Heating plate for heating an object placed on its surface and chemical treatment reactor equipped with said plate A heating floor or plate for heating an object such as a substrate placed on its surface. A plate is provided whose surface temperature can be accurately adjusted so that the heat quantity supplied by two surface zones of the plate can be different even i... | 06/03/1997 |
| 5528015 | Display-and-control panel for a cooking surface An electric range top has a cooking surface with at least one hotspot and a display-and-control panel for the cooking surface. The panel accommodates display devices and manually operated control devices for regulating each hotspot. The cooking surface ha... | 06/18/1996 |
| 5459300 | Microplate heater for providing uniform heating regardless of the geometry of the microplates A heater which accommodates microwell plates having a variety of bottom and peripheral geometries. The heater consists of a thermally conductive compliant material layer disposed on a planar heated platen. The compliant layer is dimensioned such that it c... | 10/17/1995 |
| 5448036 | Cooktop with illuminated cooktop temperature indicators controlled by the hot plates A cooktop includes an at least partially transparent surface formed of glass or glass ceramic and having burner regions with peripheral and inner portions. Heating elements are disposed beneath the surface in the vicinity of the burner regions. A lighting... | 09/05/1995 |
| 5430427 | NTC sensor rod for glass cooktops The temperature of a glass cooktop is sensed by an elongated thermistor rod positioned below the cooktop. The thermistor rod has a negative temperature coefficient of electrical resistance and is connected in a control circuit for the cooktop heater. The ... | 07/04/1995 |
| 5415535 | Semiconductor resin sealing apparatus A chase is arranged on a heating plate of a die set. Semiconductor packages are arranged, as products to be heated, in cavities of the chase. A runner is provided in the surface of the chase to feed a molten resin into the cavities. The heating plate has ... | 05/16/1995 |
| 5399840 | Block heating system with thermistor probe A block heating system includes a housing defining an open-top well closed at the bottom by a base plate which is heated by an electric heater in the housing. One or more carrier blocks are removably received in the well, each block having a plurality of ... | 03/21/1995 |
| 5397873 | Electric hot plate with direct contact P.T.C. sensor Electrical heating apparatus (10) is used in an electric stove (R) having a glass/ceramic cooking surface (S). A pan (12) is mounted adjacent an underside of the cooking surface. An electrical heating element (20) installed in the pan heats a defined area... | 03/14/1995 |
| 5352864 | Process and device for output control and limitation in a heating surface made from glass ceramic or a comparable material A process is provided for output control and limitation in a heating surface made from glass ceramic or a comparable material, especially a glass ceramic cooking surface. In a heating surface, in which the individual heating zones are each heated with sev... | 10/04/1994 |
| 5345063 | Nestable stackable heated bowl with removable thermostatically controlled electric heating element An electrically heated molded plastic pet feeding bowl capable of being interengagedly stacked in nested relationship with similar bowls for shipment or storage has a removable electric heating unit insertable through an open bottom of the bowl into heat ... | 09/06/1994 |
| 5329097 | Compact substrate heater for use in an oxidizing atmosphere A compact heater is designed for the deposition of thin films at high temperatures in an oxidizing atmosphere or in vacuum. The heater is designed to accommodate a small-diameter load-lock system in an ultra-high-vacuum deposition chamber, and can operate... | 07/12/1994 |
| 5294778 | CVD platen heater system utilizing concentric electric heating elements A wafer support platen heating system for low pressure chemical vapor deposition of apparatus includes multiple resistance heaters for individual heating of multiple portions of the platen to provide a predetermined uniform or non-uniform temperature grad... | 03/15/1994 |
| 5258736 | Temperature sensor or temperature sensor arrangement made from glass ceramic and bonding film resistors Temperature sensors or temperature sensor arrangements made from glass ceramic and bonding film resistors, suitable especially for control and limitation of output in glass ceramic cooking areas, are distinguished in that thin- and/or thick-film resistors... | 11/02/1993 |
| 5243172 | Cook-top with automatic controls A cook-top (10) is provided which includes at least one cooking section (12a) heated by at least one heating element which is activated by function controls (9). It includes at least one detector (20) which detects the presence of a cooking utensil on at ... | 09/07/1993 |
| 5227610 | Process and device for indicating an anomalous thermal stress condition in a heating surface made from glass ceramic or a comparable material A process for detecting and indicating an anomalous thermal stress condition in a heating surface made from glass ceramic or a comparable material, especially a glass ceramic cooking surface, is described, and by one or more temperature sensors, independe... | 07/13/1993 |
| 5225663 | Heat process device A heat process device according to the present invention includes a film-like heating body serving as a heat source for a heat transfer plate on which an object to be processed is mounted and heated. Therefore, the heat process device can be excellent in ... | 07/06/1993 |
