Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 7280028 | Temperature sensor and method of making the same A method for manufacturing a planar sensor, comprises disposing a film of a material on a substrate, wherein the material is selected from the group consisting of platinum, rhodium, palladium and mixtures and alloys comprising at least one of the foregoing materials... | 10/09/2007 |
| 6933829 | Electrical component having a protective layer An electrical component includes a base, connector elements connected to the base, an intermediate layer on a surface of the base, and a protective layer on the intermediate layer. The intermediate layer and the protective layer are produced from a same material. Th... | 08/23/2005 |
| 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 |
| 5841340 | Solderless RF power film resistors and terminations Solderless RF power film resistor and termination assemblies which include a flat film resistor or termination pressed by a nonmetallic clamping plate into thermal contact with a base plate functioning as a heat sink. A substrate such as a BeO ceramic sub... | 11/24/1998 |
| 5790385 | One-chip electronic composite component Disclosed are a structure and a method of manufacture of a one-chip electronic composite component which is reduced of size while providing a resistance value properly adjusted. A resistor is formed on an insulator substrate. The resistor has a trimming g... | 08/04/1998 |
| 5610572 | Resistor element having a plurality of glass layers A resistor element has a ceramic substrate and a metallic resistor coated onto the substrate. The metallic resistor has varied electrical resistance depending on temperature. A pair of leads are electrically connected to the metallic resistor. A plurality... | 03/11/1997 |
| 5252944 | Film-type electrical resistor combination The film-type electrical power resistor includes a flat chip of aluminum oxide, having a resistive film screen-printed onto one of its sides. Leads are bonded to that side and electrically connected to the film, the leads being such that the chip may be c... | 10/12/1993 |
| 4967594 | Sheathing and venting of resistance-tape level sensor Sheathing for a resistance-tape level sensor which provides a multiplicity of enclosing envelopes for guarding the critical inner electrical sensing element, and multiple venting paths for respiration and pressure-equalization of chambers formed by the se... | 11/06/1990 |
| 4481380 | High voltage insulator for electrical components having telescoping insulative sleeves A high voltage electrical component can be insulated by placing such component into a first sleeve of preformed insulative material dimensioned to receive and telescope over the component. An internal abutment in the first sleeve positions the component f... | 11/06/1984 |
| 4250397 | Heating element and methods of manufacturing therefor The heating element includes a flexible graphite fiber-loaded impregnated paper saturated with a binder to ensure and maintain intimate electrical contact between the graphite fibers. In one form, two segments of the graphite fiber-loaded paper are couple... | 02/10/1981 |
| 4135179 | Electrical temperature sensing device An electrical temperature sensing device for food heating appliances such as toasters and the like which is constructed to provide rapid thermal response, significant resistance variation as a function of temperature, and good mechanical strength so as to... | 01/16/1979 |
| 4104509 | Self-regulating heating element Self-regulating heating element comprising one or more PTC resistors enveloped by a synthetic-material/filler mixture which has a good heat conductivity such as an MgO-SiO2 -silicon rubber mixture.... | 08/01/1978 |
| 4079350 | Thermistor sensors A sensor for detecting a rapid temperature rise comprises a thermistor chip electroded on opposing faces and having lead-in wires electrically connected to the faces. The thermistor chip is encapsulated between two ribbons of plastic film which, in turn, ... | 03/14/1978 |
