...In 1790, the cost to obtain a patent was between $4 and $5.
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7351099 | Step up pin for coax cable connector The invention provides a coaxial cable connector having a step up pin that engages the center conductor of a coax cable to increase the diameter of the center conductor to thereby make it more manageable. The pin is stored with the connector until the pin and connec... | 04/01/2008 |
| 7286039 | Chip resistor and method of manufacturing the same A chip resistor is provided which includes a resistor film 5 formed between a pair of terminal electrodes 2 and 3 on an upper surface of an insulating substrate 2. The resistor film is formed with two inward grooves 7, 8 and two tr... | 10/23/2007 |
| 7241131 | Thick film heater apparatus A thick-film electric heater having thick-film layers applied directly on a thermally conductive non-flat substrate. Preferably, the substrate is cylindrically shaped. A dielectric layer is silk-screened on the substrate surface. A resistive layer is silk-screened o... | 07/10/2007 |
| 7241975 | Igniter systems with associated lead frame Resistive igniter systems are provided that comprise a metal substrate with an associated resistive igniter element in electrical connection through braze applied to the metal substrate. Igniter systems of the invention can enable significantly simplified manufactur... | 07/10/2007 |
| 7161463 | Organic NTC composition, organic NTC device and production method of the same The organic NTC composition according to the present invention is a mixture of a conjugated organic semiconductor polymer and a thermoplastic resin or thermosetting resin. For example, the mixed amount of the thermoplastic resin or thermosetting resin is preferably ... | 01/09/2007 |
| 7148785 | Circuit protection device A circuit protection device (31) suitable for surface mounting on a substrate (19). The device has a laminar PTC resistive element (3) which is composed of a conductive polymer composition and is positioned between first and second electrodes ( | 12/12/2006 |
| 7071449 | Molding system with integrated film heaters and sensors Film heater apparatus and method for heating a melt channel in a molding device includes structure and/or steps whereby a first dielectric layer is disposed on a surface of a substrate. An active heating element is disposed on the first dielectric layer, the active ... | 07/04/2006 |
| 7053749 | Metal plate resistor A metal plate resistor includes a resistive body comprising a metal plate, and at least a pair of electrodes joined respectively to opposite ends of the resistive body, the electrodes being made of a highly conductive metal conductor. The resistive body has a main s... | 05/30/2006 |
| 7053750 | Voltage probe systems having improved bandwidth capability A resistive pin for use in a voltage probe includes a pin-head that is configured to contact a test point in a device under test, and a resistor that is attached to the pin-head. Other systems are also provided for establishing electrical connections between testing... | 05/30/2006 |
| 7042330 | Low resistance value resistor The low resistance value resistor 11 has two electrodes 12,13 of metal strips having a high electrical conductivity. The metal strips are affixed on the resistor body by means of rolling and/or thermal diffusion bonding. A fused solder layer is formed ... | 05/09/2006 |
| 7029260 | Molding apparatus having a film heater Film heater apparatus and method for heating a melt channel in a molding device includes structure and/or steps whereby a first dielectric layer is disposed on a surface of a substrate. An active heating element is disposed on the first dielectric layer, the active ... | 04/18/2006 |
| 6906611 | Ceramic component comprising an environmentally stable contact system A ceramic component includes a ceramic body, electrodes applied to the ceramic body, electrical connectors that connect the electrodes with one or both of an external circuit and a voltage source, a substance that connects the electrical connectors to the electrodes... | 06/14/2005 |
| 6441718 | Overlay surface mount resistor A surface mount resistor includes an elongated piece of resistive material having strips of conductive material attached to its opposite ends. The strips of conductive material are separated to create an exposed central portion of the resistive material t... | 08/27/2002 |
| 6326677 | Ball grid array resistor network A ball grid array resistor network has a substrate that has top and bottom surfaces. Resistors are disposed on the top surface. Conductors are disposed on the top surface, and each conductor is electrically connected to an end of each resistor. Vias exten... | 12/04/2001 |
| 6181234 | Monolithic heat sinking resistor A monolithic resistor is provided with a central resistive metallic foil strip positioned between and attached to a pair of wings formed from an electrically conductive metallic foil. The wings include large surface areas to dissipate heat. A plurality of... | 01/30/2001 |
| 6097277 | Resistor network with solder sphere connector A resistor network has a substrate with top and side surfaces. Resistors are located on the side surfaces. Several side conductors are located on the side surface and are electrically connected to the resistors. Several top conductors are located on the t... | 08/01/2000 |
| 6090313 | High temperature PTC device and conductive polymer composition A high temperature PTC device comprising a polymeric conductive composition that includes nylon-11 and a carbon-based particulate conductive filler has a switching temperature greater than 150° C., preferably between about 160° C. and 200° C. The compo... | 07/18/2000 |
| 6078028 | Solderless ceramic igniter having a leadframe attachment An electrical connection for a ceramic hot surface element in which the ends of the hot surface element are essentially interference fit within a pair of metallic termination sleeves, and electrical connection to the hot surface element is provided by an ... | 06/20/2000 |
| 6020809 | Mounting structure for thermistor with positive resistance-to-temperature characteristic A thermistor with positive resistance-to-temperature characteristic used in a overcurrent protection circuit has electrodes on mutually opposite main surfaces and is mounted to a substrate having electrically conductive members such that deterioration of ... | 02/01/2000 |
| 5929745 | High-voltage electric component A high-voltage variable resistor unit including a terminal connection structure capable of preventing upward movement or rotation of the terminal by simple construction. A terminal is provided with a connecting portion between a held portion and a lead wi... | 07/27/1999 |
| 5734313 | Chip-type composite electronic component A chip-type composite electronic component according to the present invention comprises an insulating substrate (1), a common electrode (2) formed on the substrate (1), a plurality of individual electrodes (3a-3h) formed on the substrate (1) to be spaced ... | 03/31/1998 |
| 5519187 | Electrically conductive ceramic glow plug with axially extending pocket and terminal received therein An electrically conductive ceramic glow plug for assisting in the combustion process of a compression ignition type internal combustion engine. The glow plug comprises a tubular metal outer body member adapted to be secured to a cylinder head of the engin... | 05/21/1996 |
| 5495223 | Hybrid integrated circuit device A hybrid integrated circuit device includes a circuit board having at least two electrical conductors; a chip resistor bridgingly disposed across two of the electrical conductors of the circuit board; and solder electrically connecting the chip resistor t... | 02/27/1996 |
| 5471032 | Electrical resistance ignitor with spaced parallel filaments brazed in refractory block recesses An ignitor for fuel gas burners formed of a plurality of spaced parallel filaments of SiC coated Carbon (C) high temperature brazed with Chromium Silicide in grooves provided in a refractory base block of Aluminum Oxide and Silicon Oxide. Terminal posts o... | 11/28/1995 |
| 5300755 | Structure for welding electrical connecting portions to each other using laser light beam An arrangement and method for establishing an electrical and mechanical connection between electrically conductive members. The arrangement includes an electrically conductive connecting member, two electrically conductive metallic members disposed opposi... | 04/05/1994 |
| 5287081 | Multilayer thin film multijunction integrated micropotentiometers Multilayer, thin film multijunction integrated micropotentiometers are formed in an integral multifilm membrane form over a through opening in a nonmagnetic, dielectric substrate. Through the use of conventional photolithographic and etching techniques, i... | 02/15/1994 |
| 5204655 | Resistor element with a planar ceramic substrate covered with a resistive metallic film and having apertures for lead wire connection A resistor element for determining a parameter, including a planar ceramic substrate having a bearing surface and at least one aperture formed through the thickness thereof, an electrically resistive metallic layer which is substantially formed on the bea... | 04/20/1993 |
| 5168256 | Resistor element using conductors having relatively low thermal conductivity A resistor element for determining a parameter, including a ceramic support having a bearing surface, an electrically resistive body formed on the bearing surface of the ceramic support, a conductor or conductors electrically connected to the electrically... | 12/01/1992 |
| 4991059 | Electric component An electronic component with leads each having a bonding portion is disclosed. Each bonding portion is formed with a through hole or a notch to provide for satisfactory soldering and reduce the possibility of defective soldering.... | 02/05/1991 |
| 4978814 | Electrical device including an electrical connector An electrical connector for making a connection to a thick film track comprises a plurality of conductive fibres braided together, each of the fibres having a diameter so as to provide sufficient stiffness to the connector and to permit adhesion of the co... | 12/18/1990 |
| 4937551 | PTC thermal protector device An improved PTC thermal protector device is disclosed wherein the PTC element is protected from excessive mechanical forces such as shear forces that would otherwise significantly degrade PTC performance. The PTC element is protected by one or more adhesi... | 06/26/1990 |
| 4937435 | Flexible electric heating pad using PTC ceramic thermistor chip heating elements A flexible electric heating pad has a plurality of positive temperature coefficient (PTC) ceramic thermistor chip heating elements arranged in a two dimensional array between first and second flexible planar sheets of electrically conductive material, pre... | 06/26/1990 |
| 4855570 | Electric fluid heating unit having radial PTC ceramic heating elements An electric heating unit for heating fluid, such as air in a hair drier, includes two ring-shaped electrodes and a plurality of spaced, plate-like ceramic heating elements having a positive temperature coefficient of resistance (PTC) aligned between the e... | 08/08/1989 |
| 4823461 | Method of manufacturing fluidic angular rate sensor A method of manufacturing a fluidic angular rate sensor of the type wherein fine wires, such as tungsten wires, are mounted in tension over the heads of two pairs of spaced apart metal supports which are mounted on a ceramic disc having fluid passage aper... | 04/25/1989 |
| 4803345 | Ceramic heater apparatus with metal electrodes A ceramic heater body is formed in a plate shape, and has electrode attaching portions at both ends of the heater body. A plurality of openings are formed in the electrode attaching portion, and a metallized layer is formed on the inner peripheral surface... | 02/07/1989 |
| 4758814 | Structure and method for wire lead attachment to a high temperature ceramic sensor A first layer of titanium or tin is vapor deposited upon opposing major surfaces on the ceramic sensor. A second layer consisting of platinum, palladium or ruthenium is deposited over the first layer. The structure is then preferably annealed in air in or... | 07/19/1988 |
| 4730102 | Electroceramic heating devices An electroceramic heater including a pair of metallized electrodes disposed upon the sides of an electroceramic body and a pair of lead wires ultrasonically welded and metallurgically to the electrodes, with the inner ends of the wires being swaged such t... | 03/08/1988 |
| 4720697 | Terminal for electrical resistance heating element and a method for the manufacture of such terminals A terminal for electrical resistance heating elements, comprising a thin, resistance thread of a highly temperature resistant material, particularly MoSi2, which at least one end thereof has a lead-in electrode of a material having a better con... | 01/19/1988 |
| 4719317 | Film-type electrical element and connection wire combination and method of connection To form a sturdy, environmentally essentially unaffected and high-temperature resistance electrical connection between a connection wire (4) and a conductive track (2) on the substrate (1), a portion of the wire (4) is embedded in a unitary bonding elemen... | 01/12/1988 |
| 4714910 | Electrical component having high strength given stressing due to temperature change and due to surge currents, particularly a varistor An electrical component, particularly a varistor, having high strength given stressing due to temperature change and due to surge currents is composed of a ceramic body whose end faces contain solderable metallic coatings as electrodes to which power supp... | 12/22/1987 |