Famous Patents
The first commercial microwave oven was nearly 6 feet tall and weighed in at 750 pounds.
PatentStorm News
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 |
| 6461879 | Method and apparatus for measuring effects of packaging stresses of common IC electrical performance parameters at wafer sort In the testing of one or more die as part of a semiconductor wafer, electrical testing of an unstressed die of a wafer is undertaken. The die of the wafer is then physically stressed to a first stressed state, and electrical testing is undertaken thereon.... | 10/08/2002 |
| 6373126 | Method for reducing IC package delamination by use of internal baffles Barrier structures are included within the packaging material of a packaged semiconductor device, such barrier structures including barrier bodies which overlie the die-die pad assembly of the device on either side thereof. The barrier bodies act as baffl... | 04/16/2002 |
| 6362524 | Edge seal ring for copper damascene process and method for fabrication thereof A metal edge seal ring is formed in a trench made up of a large number of short, connected legs in perpendicular relation. Metal is deposited in the trench, and because the metal is comprised of many short segments rather than several long, straight secti... | 03/26/2002 |
| 6355511 | Method of providing a frontside contact to substrate of SOI device A method for making frontside contact to a substrate through an SOI structure thereon is provided. An etching step is undertaken to form a trench in the SOI structure so as to expose and define a rough surface of the substrate. Then, a thin insulating lay... | 03/12/2002 |
| 6306707 | Double layer hard mask process to improve oxide quality for non-volatile flash memory products In the manufacture of an EPROM or EEPROM semiconductor device that includes a core region and a peripheral region, a nitride layer is formed over the core region and peripheral region, and an oxide layer is formed over the nitride layer. A layer of photor... | 10/23/2001 |
| 6291082 | Method of electroless ag layer formation for cu interconnects A dielectric layer has an opening which communicates with a metal line therebeneath. A layer of silver is deposited over the structure and into the opening, and copper is deposited by electroplating in the opening. An additional silver layer is the deposi... | 09/18/2001 |
| 6283113 | Strip separation tool A tool is provided herein for separating stacked strips of semiconductor structures held by a magazine, which strips have become attached together. The tool is made up of first and second elongated members in side-by-side relation, each member defining a ... | 09/04/2001 |
| 4871885 | Combined push and slide switch assembly The on-off operation of the switch as the slide switch is effected by moving the operating knob in the first horizontal direction, namely, the X-direction to move the slider A together with the slider B in the same direction and thereby sliding the first ... | 10/03/1989 |
| 4870367 | Signal amplifier circuit A signal amplifier circuit which can amplify, with a simple construction, an AC component having an amplitude of one polarity with accuracy from a composite signal which contains a DC component combined with the AC component. The circuit comprises a compa... | 09/26/1989 |
| 4870262 | Signal processing apparatus and binary encoder circuit for the same Disclosed is a signal processing apparatus comprising a sensor whose impedance varies according to changes in quantity sensed thereby, a power source applying a voltage to the sensor, a current/voltage conversion circuit for converting an output of curren... | 09/26/1989 |
| 4868550 | Photoelectric touch panel A photoelectric touch panel comprising arrays of equally spaced light emitting elements and photosensitive elements disposed in a frame configuration on the circumference of a CRT display screen in which a matrix of infrared beams is formed in front of th... | 09/19/1989 |
| 4865832 | Molybdenum oxide whiskers and a method of producing the same A whisker of molybdenum oxide in the form of a filament, rod or flake. Molybdenum oxide whiskers are produced by firing metallic molybdenum at a temperature of at least 400° C., preferably at least 800° C., in an atmosphere containing oxygen, or by firi... | 09/12/1989 |
| 4862301 | Double cassette tape player Disclosed is a double cassette tape player wherein a single magnetic head is used to perform the playback and recording operations for both cassette tapes. The cassette tapes are each mounted in a cassette mounting section and the magnetic head is mounted... | 08/29/1989 |
| 4862195 | Overcoating layer for thermal printing head A thermal head having an overcoating layer formed by a material in which a metal element is added to a sialon. The sialon is silicon (Si)-aluminum (Al)-oxygen (O)-nitrogen (N) compound. Thus, the thermal head can print at a high speed, increase its printi... | 08/29/1989 |
| 4861950 | Multiple switch device having waterproof structure A switch device having a casing, an actuator swingably supported to the casing, a plurality of projections suspended down from the lower surface of the actuator for changing over a switch by pressing a plurality of switch elements arranged in the casing w... | 08/29/1989 |
| 4861174 | Device for driving print member of printer A device for activating the pen of a printer comprises a push member and for pushing the pen toward the platen of the printer, a connecting lever secured to the push member, a driving lever for imparting a driving motion to the push member via the connect... | 08/29/1989 |
| 4860432 | Method of manufacturing a magnetoresistive sensor In a method of manufacturing a magnetic sensor by etching a ferromagnetic film on a substrate with an etching solution to form a plurality of magnetoresistive elements of a given width disposed in a row in parallel with each other on the substrate, wherei... | 08/29/1989 |
| 4860131 | Method for recorrecting head position in a disk drive A method of re-correcting the position of a head is used in a disk driving device including a zero track restoring arrangement for electrically detecting the zero track position on a magnetic disk, and including a track counter indicating the track positi... | 08/22/1989 |
| 4860335 | Method for notifying of a call arrival A call arrival notification method for a motor vehicle provided with a telephone system and a theft-preventing system allows the telephone system to be set to the call arrival notification mode. When a call arrives in the call arrival notification mode, t... | 08/22/1989 |
| 4859840 | Code reading apparatus A code reading apparatus of a bar code reader which has detecting means for outputting a reading signal responsive to the code displayed on a medium, edge detecting means for detecting the edge of the reading signal, counting means for starting counting e... | 08/22/1989 |
| 4856921 | Rotary wheel printer A rotary wheel printer such as a daisy wheel printer comprises a rotatable platen for winding a print paper sheet partially therearound, a carriage movable along the platen, a type wheel mounted on the carriage in confronting relation to the platen and ha... | 08/15/1989 |
| 4857917 | Remote control apparatus providing leader pulse followed by data pulses A communication apparatus is used in a radio control apparatus for remotely controlling the locking and unlocking of the doors or trunk of a vehicle and other uses. In this communication apparatus, a leader pulse having a predetermined duration is transmi... | 08/15/1989 |
| 4855852 | Mounting structure for magnetic head A magnetic head has a head core and a slider integrally formed with the head core, and sidewardly projecting flanges formed on a rear side of the magnetic head to be mounted against the back surface of a mounting plate for the magnetic recording/reproduci... | 08/08/1989 |
| 4855835 | AFT circuit for CATV receiver system An automatic fine tuning (AFT) circuit for a CATV receiver system of a double conversion type having a first local oscillator and a second local oscillator and a first mixer and a second mixer respectively supplied with oscillation outputs from the first ... | 08/08/1989 |
| 4853755 | Method for manufacturing a thin-film transistor array and a thin-film transistor array manufactured by the method In a thin-film transistor array, a plurality of gate buses and a plurality of source buses are formed on a substrate in such a manner that said gate buses are intersected with said source buses at crossover portions, and a plurality of thin-film transisto... | 08/01/1989 |
| 4851315 | Bisazo photoconductive film and electrophotographic light-sensitive element using same A photoconductive film includes at least one kind of bis-azo pigments and exhibits a high sensitivity. The film may be used as an electrophotographic light-sensitive element.... | 07/25/1989 |
| 4851689 | Photodetecting circuit A photodetecting circuit for detecting radiation emitted from a light emitting element in the presence of ambient radiation is disclosed. The circuit includes a first and a second synchronizing on/off input signal having a predetermined period, each signa... | 07/25/1989 |
| 4851941 | Disk drive apparatus having fine adjustment structure for disk pressing pad Disclosed is a disk drive apparatus in which relative positional relation of head and recording medium is optimized in order to assure the best condition for the recording and replay of picture. Namely, the height of pad can be changed so that the relativ... | 07/25/1989 |
| 4852011 | Apparatus for controlling the speed of an internal combustion engine vehicle In a vehicle speed control apparatus for an internal combustion engine vehicle, in which the first amount of fuel supply required for maintaining the vehicle speed at a desired speed and the second amount of fuel supply corresponding to the amount of depr... | 07/25/1989 |
| 4851529 | Pyrimidine compound A pyrimidine compound represented by the general formula: ##STR1## where m and n represent respectively integers as: 4ࣘmࣘ8 and 6ࣘnࣘ14. Pyrimidine compound according to the present invention shows Sc* phase at a low temperature below the room ... | 07/25/1989 |
| 4849852 | Variable capacitance push-button switch In a capacitive-type switch having two capacitive levels, a relatively thin blade of a desired dielectric material is interposed between two capacitive plates by downward actuation of a push-button switch so that the plates become separated by the blade. ... | 07/18/1989 |
| 4849586 | Slip ring having a rotatable insulation cover A slip ring wherein electric disconnection which may possibly arise from freezing of drops of condensed water is prevented with a simplified construction. The slip ring is of the type wherein electric connection between a fixed member and a movable member... | 07/18/1989 |
| 4846013 | Torque takeout mechanism for rotary electronic part A torque takeout mechanism for a rotary electronic part, such as a potentiometer, comprises a first rotor capable of rotating with the rotating shaft of the electronic part, a second rotor engaging with the first rotor, a flat plate disposed between the f... | 07/11/1989 |
| 4847704 | Disk driving device A disk driving device includes a rotatably driven information recording disk having multiple recording surfaces. At least two recording surfaces among them are provided with mutually related regions originally assigned with identical signals and mutually ... | 07/11/1989 |
| 4847484 | Portable image sanner having movement detection means and a window for transmitting light to the viewer An image scanner capable of precisely inputting information is disclosed. A light transmission path is formed through a wall portion of a scanner body to enable the operator to visually confirm a reading position on the document from the outside of the sc... | 07/11/1989 |
| 4847714 | Magnetic head adjusting device for a double cassette tape player A magnetic head adjusting device for a double cassette tape player wherein a single magnetic head is used commonly and alternately for a pair of cassette loading stations and azimuth adjustment of the common magnetic head can be effected individually at t... | 07/11/1989 |
| 4845346 | Touch panel having parallax compensation and intermediate coordinate determination Disclosed is here a coordinate input apparatus in which light sources and light receiving elements opposing thereto with an input operation space therebetween are arranged in an X-axis direction and in an Y-axis direction. The light sources and said light... | 07/04/1989 |
| 4845339 | Thermal head containing an insulating, heat conductive layer A thermal head in which a glazed layer, an undercoat layer, an electric power supply conductor layer and a protection layer are successively laminated on the surface of an insulating substrate, wherein an insulating heat conductive layer with a good elect... | 07/04/1989 |
| 4844359 | Cable reel A cable for holding a flat cable for electrical connection between a stationary member and a movable member includes a cylindrical inner wall defined by a partition wall formed on the movable member and a circumferential surface portion formed on a stoppe... | 07/04/1989 |
| 4845516 | Pen exchange mechanism, a pen chuck mechanism, a pen position regulating mechanism and a printing method for a pen type printer A pen exchange mechanism is disclosed, by which a plurality of pen chuck mechanisms holding pens on a carriage are disposed, and a slider is engaged with the carriage at a position corresponding to a pen, which should print, among said pens, printing bein... | 07/04/1989 |
