Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 7391948 | Optical waveguide structure Waveguide structures in which light confinement strength varies along the direction of light propagation are described. The waveguides include a core adapted to propagate light along a path defined by the core and a cladding material that at least partially surround... | 06/24/2008 |
| 6572625 | Hair transplant harvesting device and method for its use The harvesting of hair for a hair transplant procedure employs a hollow drill with an imaging system which permits alignment of center of the cutting edge of the needle with the axis of the follicular unit to be removed. The diameter of the needle is chos... | 06/03/2003 |
| 6370291 | Printed circuit board waveguide A printed circuit board is made of a light transmitting material and is used as a waveguide for light. The board may be coated on both surfaces with a light-reflecting material to improve waveguiding properties. Such a board is operative to replace the mi... | 04/09/2002 |
| 6351481 | Diode laser with screening window and method of fabrication The screening of edge-emitting laser diode bars in a production line is permitted by fabricating the source electrodes of each diode in the bar in two parts spaced apart to form a window aligned with the lasing cavity of the diode. Such windows have been ... | 02/26/2002 |
| 6313803 | Monolithic millimeter-wave beam-steering antenna The addition of semiconductor spacers into the spaces between the metal strips of a metal grid permits electron-hole plasmas to be introduced there controllably. Thus, the grid can be made to transmit or reflect an incident wave with a polarization perpen... | 11/06/2001 |
| 6298078 | Laser diodes with composite material systems which decouple refractive index and band gap profiles Laser diodes are formed using composite material systems which result in the decoupling of the refractive index and band gap profiles of the structures formed with such systems. Laser diodes with composite material systems are described which produce desi... | 10/02/2001 |
| 6298077 | GaInAsP/AIGaInP laser diodes with AIGaAs type II carrier blocking layer in the waveguide A GaInAsP/AR GaInP laser diode is provided with an AlGaAs type II carrier blocking layer in the waveguide of the diode. The resulting diode exhibits a relatively low threshold current, an increased slope efficiency and characteristic T0 and T1, for the di... | 10/02/2001 |
| 6282338 | Interfacial propagating mode waveguide An optical fiber waveguide including a selected period reflection grating structure for coupling the forward propagating mode of an optical signal transmitted through the waveguide into a backward propagating interfacial mode where a substantial portion o... | 08/28/2001 |
| 6272159 | Laser diode package with slotted lead A laser diode or laser diode bar mounted on a heat sink and having an insulating layer of greater thickness also mounted on the heat sink requires a lead overlying both the insulating layer and the diode to bend downward for making electrical contact. Fai... | 08/07/2001 |
| 6268653 | Semiconductor laser diode multi-chip module A substrate comprising, for example, a copper-beryllium oxide ceramic-copper sandwich permits a laser diode along with cooperative components to be soldered in place using a high temperature solder. The sandwich structure is operative to move the effectiv... | 07/31/2001 |
| 6250085 | Temperature self-regulated integrated circuits and devices Thermoelectric coolers are distributed within a semiconductor or an optical chip at anticipated hot spots. Each cooler is responsive to normal operating conditions or to signals from a heat sensor to remove heat from the associated hot spot. In an alterna... | 06/26/2001 |
| 6252631 | Apparatus and method for encoding high quality digital data in video Apparatus for encoding a continuous (i.e. QAM) signal into a (non-continuous) video signal is achieved in a manner to obviate noise problems normally introduced by breaks in the (video) signal due to horizontal and vertical pulses, low fidelity circuits, ... | 06/26/2001 |
| 6221028 | Vitrectomy lens with integrated illuminator The inner eye of a surgical patient is illuminated by incorporating an optical fiber in a ring configuration imbedded into or attached to a contact lens. The viewing surface of the lens if planar to optimize the surgeon's view. The opposite surface of the... | 04/24/2001 |
| 6209483 | Apparatus and method for removing silicon dioxide residues from CVD reactors CVD reactors can be cleaned at surprisingly high rates using Non-Green House gases by employing the Non-Green House gases at high temperatures and with relatively high fluorine free radical concentrations so long as high concentrations of oxygen are also ... | 04/03/2001 |
| 6211836 | Scanning antenna including a dielectric waveguide and a rotatable cylinder coupled thereto A scanning antenna includes a cylinder coupled to a dielectric waveguide into which an electromagnetic wave is launched. The cylinder includes rows of features such as recesses or stubs of differing vertical dimensions and periods. The cylinder when rotat... | 04/03/2001 |
| 6205263 | Distributed optical fiber sensor with controlled response Distributed fiber optic chemical and physical sensors provide a relatively highly uniform response over the length of the fiber by, for example, varying such properties as the core/cladding index of refraction ratio to compensate for the non-linearity in ... | 03/20/2001 |
| 6195376 | Semiconductor laser array stack package & method of fabrication Semiconductor laser diodes or diode bars are assembled into stacks by a method which permits testing of an entire stack at once and which uses only high temperature solder. The stack includes a plurality of submounts which resemble elongated bars which ar... | 02/27/2001 |
| 6178189 | Multi-layer semiconductor devices with stress-relief profiles Multi-layer, semiconductor devices are configured to reduce stress by the removal of much of the structure which does not actually contribute to device performance. In one embodiment, trough between mesas which define light emitting facets in a laser diod... | 01/23/2001 |
| 6177203 | Simultaneous diffusion bonding of an array of like parts Diffusion bonding techniques are extended to the simultaneous bonding of an array of multilevel piece parts. The problems of uneven expansion and contraction of different levels of different piece parts in the array are obviated by positioning each level ... | 01/23/2001 |
| 6175165 | Host electronic equipment with internal power supply adapted for supplying power directly to peripherals Electrical equipment such as a personal computer includes a plurality of internal components which require different voltages including low voltages of about five volts for operation. The different voltages are supplied by an internal power supply, with a... | 01/16/2001 |
| 6101205 | Laser bar structure and method of fabrication A plate of metal is bonded to a plate of and electrical insulator and the metal is cut through into a plurality of parallel channels, or recesses, each of a dimension to receive a laser diode (bar). A laser diode is positioned in each of the channels and ... | 08/08/2000 |
| 6091752 | Quantum well laser with a composition-graded interface at the quantum well Quantum well lasers are herein made with purposely-graded interfaces which control the interdiffusion of atoms during high temperature processing. The result is a predictably-graded, large interface between the quantum well and the waveguide layers to eit... | 07/18/2000 |
| 6086264 | Fiber-coupled laser device using square cross section fibers and method for fabrication Square cross section optical fibers are accurately positioned for coupling light from laser diode emitting facets through a fiber lens. The fibers are placed in parallel channels formed in a photolithographic layer on a planar surface of a substrate and c... | 07/11/2000 |
| 6037992 | Audio transmission in the video stream with adaptive gain An improved system for transmitting audio signals in a TV strewn employs an adaptive gain system. The system provides for sampling the audio signal in each of successive intervals in between 256 (28) and 65,535 (216) steps, for deter... | 03/14/2000 |
| 6028878 | Laser diode array with built-in current and voltage surge protection Protection from current and voltage spikes is provided for a laser array by attaching a reverse diode laser array to shared contact pads before the first laser array is bonded to those pads. The arrangement provides for surge protection even during fabric... | 02/22/2000 |
| 5994230 | Method for cold cleaving of laser wafers into bars The cleavage of semiconductor crystalline wafers into laser diodes or laser diode bars is carried out at a low temperature at which both the semiconductor crystal substrate and the laser-forming laminate structure thereon are imbrittled. Cleavage at such ... | 11/30/1999 |
| 5987043 | Laser diode arrays with offset components An array of laser diodes, or laser diode bars, is formed by positioning adjacent diodes or bars in an offset or staircase arrangement where the emitting facets of adjacent diodes, or bars, are in different planes. The offset arrangement permits the light ... | 11/16/1999 |
| 5959702 | Lensless video projector A video projector employs an acousto-optic deflector for moving a horizontal line of pixels vertically to form an image on a remote screen. Because the pixel images are formed from parallel beams, rather than by reimaging a line of pixel images on a verti... | 09/28/1999 |
| 5918792 | Apparatus and method for filling a ball grid array The array of recesses in a ball grid array carrier or (device) are populated with solder balls through a closely spaced tooling plate or stencil which has a like array of apertures. A solder bin is moved along side rails over the stencil allowing solder b... | 07/06/1999 |
| 5900684 | Power supply system for failsafe supply of different DC voltages Power supplies which include sockets for supplying DC voltages as well as cables for supplying DC voltages to internal components of, for example, a computer are configured to prevent a user from connecting to an inappropriate DC voltage. The apparatus in... | 05/04/1999 |
| 5898721 | InGaAsP/AlGaAs/GaAs hetero structure diode laser containing indium An InGaAsP/AlGaAs/GaAs heterostructure laser diode includes an InGaAsP quantum well and at least a cladding region of AlGaAs while essentially avoiding the deleterious effects attributed to the presence of Al in heterostructure laser diodes. Embodiments w... | 04/27/1999 |
| 5895589 | Apparatus, including a diode laser array, for removing automobile windshields Damaged automobile windshields are removed using an array of laser diodes. The diodes are chosen to provide light energy at a wavelength to be focused on and absorbed by the ceramic layer coating the windshield edge and to which is bonded the adhesive lay... | 04/20/1999 |
| 5873511 | Apparatus and method for forming solder bonding pads The placement of solder "balls" in a Ball Grid Array is accomplished by placing a solder strip in contact with the top surface of the ball grid array carrier. The pulsing of a laser directed at the solder in discrete positions permits the transfer of the ... | 02/23/1999 |
| 5868609 | Wafer carrier rotating head assembly for chemical-mechanical polishing apparatus A chemical-mechanical polishing apparatus includes a wafer carrier with a very low center of gravity which allows pressure to be applied evenly on a wafer being polished. The wafer carrier includes top, center, and bottom mating subassemblies with only th... | 02/09/1999 |
| 5865665 | In-situ endpoint control apparatus for semiconductor wafer polishing process Endpoint determination of a wafer removal process, in-situ, is afforded by the use of a Kalman filter known to be useful in celestial navigation. The use of line variable displacement transducers provides position error correction for the Kalman filter an... | 02/02/1999 |
| 5843269 | Slurry dispensing system for chemical-mechanical polishing apparatus Chemical-mechanical polishing apparatus includes three subassemblies, a top subassembly which is non-rotating but which has a lower section which forms a shell about a center and a lower subassembly both of which rotate within the shell. The system also i... | 12/01/1998 |
| 5838559 | Host electronic equipment with internal power supply adapted for supplying power directly to peripherals Electrical equipment such as a personal computer includes a plurality of internal components which require different voltages including low voltages of about five volts for operation. The different voltages are supplied by an internal power supply, with a... | 11/17/1998 |
| 5838966 | Computer-aided litigation control system Data generated and accumulated during a multi-stage proceeding, such as a litigation proceeding, is organized in a matrix of screens according to Section (catagory) and Level for later retrieval. Each screen is accessed by user selection of a point on the... | 11/17/1998 |
| 5831838 | Resonant fly-forward converter circuit An improved fly forward converter including a capacitor connected across the collector and emitter of a switching transistor to form a parallel resonant circuit with the converter's transformer primary inductance, a diode across the switching transistor c... | 11/03/1998 |
| 5830043 | Chemical-mechanical polishing apparatus with in-situ pad conditioner Chemical-mechanical polishing apparatus includes a pad reconditioning mechanism which comprises nested conical tubes which overly the pad. The outer tube has an array of holes in it much like the head of an electric razor and is rotated about its axis by ... | 11/03/1998 |
