Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 7361869 | Method for the production of an electrically conductive resistive layer and heating and/or cooling device An electrically conductive resistive layer (26) is produced by thermally spraying an electrically conductive material (18) onto the surface of a non-conductive substrate (12). Initially, the material layer (14) arising therefrom has no de... | 04/22/2008 |
| 7091820 | Methods for manufacturing resistors using a sacrificial layer A microelectronic assembly, including a microelectronic element such as a semiconductor chip and a dielectric material covering the chip and forming a body having a bottom surface. The assembly includes conductive units having portions exposed at the bottom surface,... | 08/15/2006 |
| 6087630 | Method for heating a solid surface such as a floor, wall, roof, or countertop surface A method is provided for heating the surface of a material such as a floor, wall, roof, or countertop. The method comprises providing a laminated heater element, disposing the heater element at a predetermined depth in the material and energizing the elem... | 07/11/2000 |
| 6025556 | Electronic components with resin-coated lead terminals An electronic component includes a main element such as a thermistor having electrodes formed on its surfaces, and lead terminals are electrically connected to these electrodes. A resin coating covers the main element, and both the main element and the le... | 02/15/2000 |
| 5997998 | Resistance element Concerning a resistance element comprising a laminated and sintered article of an insulating material substrate layer and a conductor layer formed on or embedded in the insulating material substrate layer, a material which is constituted of tungsten and c... | 12/07/1999 |
| 5932124 | Method for heating a solid surface such as a floor, wall, or countertop surface A method is provided for heating the surface of a material such as a floor, wall, roof, or countertop. The method comprises providing a laminated heater element, disposing the heater element at a predetermined depth in the material and energizing the elem... | 08/03/1999 |
| 5181007 | PTC temperature sensor for use in an exhaust gas system A PTC temperature sensor, in particular for use in the exhaust gas system of internal combustion engines, has a sensing element including a PTC resistor connected to conductor webs disposed in a housing. The PTC resistor and the conductor webs are compose... | 01/19/1993 |
| 4860434 | Method of making flat electrical resistance heating element The flat electrical resistance heating element is intended principally for a household article having a heating surface. The heating element comprises a heating resistance cut out from a metal sheet (1) which is coated with a substrate (2) of electrically insu... | 08/29/1989 |
| 4633063 | Vented heating element for sterile cutting and welding together of thermoplastic tubes A heating element for sterilely melt-cutting and welding together a pair of thermoplastic tubes transversely of the axis of the tubes includes an outer folded metal sheet, such as copper, aluminum, silver or gold, an electric resistance heating element of... | 12/30/1986 |
| 4602238 | Infrared panel emitter and method of producing the same A nonfocused infrared panel emitter and method of making the same. The panel emitter includes a primary emitter positioned between an insulating layer and a secondary emitter. Preferably, the panel emitter comprises a metal foil primary emitter, woven alu... | 07/22/1986 |
| 4556860 | Conductive polymers Method and apparatus for producing an electrical conductor are provided comprising a doped polymeric material and an encasement means substantially impermeable to the dopant, the encasement means having matching surfaces in contact with the polymeric mate... | 12/03/1985 |
| 4501951 | Electric heating element for sterilely cutting and welding together thermoplastic tubes An electric heating element for sterilely cutting and welding together a pair of thermoplastic tubes transversely of the axis of each tube includes as an outer layer a folded sheet of a metal, such as copper, aluminum, silver or gold, having a thermal con... | 02/26/1985 |
| 4278877 | Electrical heating unit with flattened embedded heating coil Resistance heating coils, flattened longitudinally along two sides to have generally oval cross-sections, are embedded in situ in a lightweight ceramic fiber insulating body adjacent to and extending along beneath the surface of the insulating body. Elect... | 07/14/1981 |
| 4149066 | Temperature controlled flexible electric heating panel A sheet-like thin flexible heat-emitting surface layer and a coextensive thin flexible serpentine heat-sensing layer are overlayed by thin flexible synthetic plastic sheets which are sealed peripherally. Lead wires from an electrical plug to the heat-emit... | 04/10/1979 |
