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| Number | Title | Issue Date |
| 4438448 | Zig-zag V-MOS transistor structure A zig-zag V-groove configuration for use in V-MOS transistors is disclosed. Instead of merely forming parallel rows of V-grooves, a zig-zag configuration is used, utilizing two different directions for the V-grooves, at least one of which is not the conve... | 03/20/1984 |
| 4328611 | Method for manufacture of an interdigitated collector structure utilizing etch and refill techniques A bipolar semiconductor is manufactured by forming a plurality of grooves along the vertical (111) planes in a high resistivity epitaxial silicon layer which is disposed on an N+ (110) oriented substrate. Low resistivity epitaxial silicon of the same cond... | 05/11/1982 |
| 4310569 | Method of adhesion of passivation layer to gold metalization regions in a semiconductor device A method for adhering a passivation layer to gold regions in a semiconductor device. The method comprises the steps of providing a semiconductor device having at least one gold region formed thereon. A layer of a metal reactive with the gold is then depos... | 01/12/1982 |
| 4308505 | Frequency detector device and method A frequency detector and method for use in timing and carrier recovery applications. In a timing recovery application, the circuit includes means for generating a variable frequency periodic clock signal corresponding to an input data signal, means for de... | 12/29/1981 |
| 4295267 | Two-mask VJ-FET transistor structure A simplified method of fabricating V-groove junction field effect transistors using only two masking steps. The first masking step opens regions in an ohmic refractory metal layer deposited on a doped semiconductor wafer. V-grooves are anisotropically etc... | 10/20/1981 |
| 4288870 | Integrated telephone transmission and switching system An integrated telephone transmission and switching system operating in a multiframe format where each frame consists of a plurality of time slots and includes a base switch connected to a plurality of multitime slots data buses where the base switch opera... | 09/08/1981 |
| 4268756 | Optical transceiver An optical transceiver for transmitting optical data to an optics communication channel and receiving optical data from the optics communication channel is disclosed. The transceiver includes a light sensor, a light emitter, and an interface between the o... | 05/19/1981 |
| 4243427 | High concentration phosphoro-silica spin-on dopant A coating composition useful for forming a high concentration phosphoro-silica spin-on dopant is disclosed. The coating composition is formed by the steps of heating a solution of mono-aluminum phosphate, adding a methyl alcohol to the hot solution so as ... | 01/06/1981 |
| 4241358 | Radiation sensitive device with lateral current A radiation sensitive solid state device employing a lateral current and a method for shortening the turn-off time of a radiation sensitive device are disclosed. The device includes a semiconductor layer of one conductivity type and a radiation sensitive ... | 12/23/1980 |
| 4239332 | Self-aligning fiber optic relay This invention provides for a relay apparatus for use with optical fibers. A first set of optical fiber ends is mechanically secured in a suitably shaped retainer. A second set of optical fiber ends is secured in a second retainer appropriately shaped to ... | 12/16/1980 |
| 4237345 | Transformer with integral reed contact A magnetically operated switch especially useful in telephone applications includes a transformer having a plurality of windings on an E-frame core and a reed switch magnetically coupled to the core by a plurality of high permeability strips which are pla... | 12/02/1980 |
| 4234357 | Process for manufacturing emitters by diffusion from polysilicon A process for forming a semiconductive device in which after a base region has been formed, a layer of polysilicon is deposited over the region. A protective covering, such as silicon nitride, is formed over areas of the polysilicon which overlay selected... | 11/18/1980 |
| 4232386 | Subscriber switch controller for controlling connections between a plurality of telephone subscriber lines and a pair of multitime-slot digital data buses A subscriber switch controller for use in a telephone system operating in time frames consisting of a plurality of time slots where the system includes a base switch connected to a plurality of multitime-slot buses for switching data between any of the ti... | 11/04/1980 |
| 4229474 | Breakage resistant V-grooved <100> silicon substrates Flat and parallel depositions of low pressure chemical vapor deposited (LPCVD) polycrystalline intrinsic silicon are formed on both sides of a wafer of P-I-N substrate of silicon to support the wafer during subsequent polish removal from the top sur... | 10/21/1980 |
| 4227768 | Module for mounting electrical contacts A module for mounting electrical contacts comprises a base formed of resilient synthetic plastics material having means for mounting an electrical contact and a male and female coupling element disposed so that two modules can be connected to one another ... | 10/14/1980 |
| 4226011 | Manufacturing method for metalized plastic dielectric capacitors for improved current capabilities An improved method for the attachment of lead electrodes to metallized film capacitors is disclosed herein. Capacitors of this type are formed by winding thermoplastic dielectric films, each having a conductive coating, into a coil and applying conductive... | 10/07/1980 |
| 4225941 | Controller for bubble memories This invention discloses a method for the simultaneous control and management of an arbitrary number of bubble memories, whereby the existence, locations, and defects of the blemished data positions in the bubble memory devices are managed by the inventio... | 09/30/1980 |
| 4202005 | Distributed collector ballast resistor structure A distributed collector ballast resistor structure for use in a distributed collector contacted transistor comprises a diffusion geometry which is designed to employ a number of distributed collector ballast resistors in parallel as opposed to a single bu... | 05/06/1980 |
| 4195206 | Path test apparatus and method Path test apparatus and a method for verifying the continuity of a data path in a telephone system between an input portion and an output portion of a telephone interface which receives and transmits telephone signals where the telephone system operates i... | 03/25/1980 |
| 4191788 | Method to reduce breakage of V-grooved <100> silicon substrate Flat and parallel depositions of low pressure chemical vapor deposited (LPCVD) polycrystalline intrinsic silicon are formed on both sides of a wafer of P-I-N V-grooved substrate of silicon to support the wafer during subsequent polish removal from t... | 03/04/1980 |
| 4190458 | Metal-silica solution for forming films on semiconductor surfaces An improved method for forming a metal-silica coating solution having particular utility in the formation of metal-organo-silicate films on semiconductor surfaces is disclosed. The method comprises the steps of forming a mixture of a first solution having... | 02/26/1980 |
| 4190767 | Optical encoder apparatus Disclosed is an encoder assembly employing a single radiant energy source mounted oppositely disposed from two sensors. A shutter having two distinct leading edges is mounted for movement between the source and the sensors. One edge is aligned to interrup... | 02/26/1980 |
| 4185646 | Control circuit for multi-denomination cash dispenser A control circuit for a multi-denomination cash dispenser in which the number of bills or coins of each denomination, for varying desired quantities of money to be dispensed, are selected such that the total amount of time required to dispense varying qua... | 01/29/1980 |
| 4182977 | Constant output light emitting device A light emitting device which provides substantially constant output power is disclosed. The light emitting device includes a light emitter and a compensating circuit for supplying current to the light emitter so that at any given time an increase in elec... | 01/08/1980 |
| 4178479 | Communication processor apparatus for use in a TDM switching system Communication processor apparatus for use in a TDM telephone system operating in a multiframe format consisting of a plurality of time frames where each time frame consists of a plurality of time slots having a time slot rate and where the plurality of fr... | 12/11/1979 |
| 4178478 | Subscriber terminal for use in a TDM switching system A subscriber termnal for use in a TDM telephone system operating in a multiframe format where each time frame consists of a plurality of time slots, said system including a base switch connected to a plurality of multitime slot data buses for switching en... | 12/11/1979 |
| 4172214 | Integrated message accounting system An integrated message accounting system for use in a telephone system operating in time frames each consisting of a plurality of time slots. The system includes line groups each having a number of primary and secondary input and output portions for receiv... | 10/23/1979 |
| 4169656 | Fiber optic interface for combined signal transmission and detection A fiber optic interface for combined signal transmission and detection is provided. The interface enables transmission in two directions over a single optic fiber and includes a housing having an elongated channel extending therethrough. The housing is co... | 10/02/1979 |
| 4156110 | Data verifier A data verifier for verifying the operation of a multiplexing system. The data verifier generates test information as an input to the multiplexing system. The multiplexing system processes the test information in the same manner as normal data. The data v... | 05/22/1979 |
| 4147943 | Sensitive high speed clocked comparator A sensitive high speed clocked comparator for use with low level differential logic circuits which utilizes an amplifier, a Gilbert Gain Cell, and load devices to amplify the difference between analog voltages being compared, and a high speed latch to inc... | 04/03/1979 |
| 4143407 | Magnetic data storage and retrieval system A system for recording and retrieval of data consisting of a data storage means having a pre-recorded signal imposed thereon, data recording and playback means, and a control means. The control means is coupled to the recording and playback means so that ... | 03/06/1979 |
| 4133980 | Data pulse register/sender for a TDM switching system A dial pulse register/sender for use in a telephone system operating in time frames each consisting of a plurality of time slots. The register/sender is capable of detecting and sending supervisory signals in dial pulse format for each time slot. The regi... | 01/09/1979 |
| 4133979 | Multifrequency sender/receiver in a multi-time slot digital data stream A multifrequency sender/receiver in a telephone system operating in time frames each including a plurality of time slots, including a sender for generating and connecting selected multifrequency tone signals in pulse code modulated format to a first group... | 01/09/1979 |
| 4126713 | Forming films on semiconductor surfaces with metal-silica solution An improved method for forming a metal-silica coating solution having particular utility in the formation of metal-organo-silicate films on semiconductor surfaces is disclosed. The method comprises the steps of forming a mixture of a first solution having... | 11/21/1978 |
| 4110562 | Service generator for generating a plurality of tones A service generator and method for generating a plurality of tones for use in a telephone system operating in time frames each consisting of a plurality of time slots. The service generator includes tone generators for generating each time frame pulse cod... | 08/29/1978 |
| 4107457 | Transfer terminal with library phrase memory A data transfer terminal of the type including a keyboard means, a display means and a printer for use in a data center controlled data transfer system. The printer of the data transfer terminal is provided with a library phrase memory. The library phrase... | 08/15/1978 |
| 4074800 | Endless printer ribbon cartridge apparatus An endless ribbon printer cartridge apparatus in which a cartridge housing is provided with improved ribbon guides for directing the ribbon along a predetermined path and with wrapping members molded into the casing thereby eliminating wrapping rollers. A... | 02/21/1978 |
| 4071704 | Service generator checking apparatus Service generator checking apparatus and a method in a telephone system operating in time frames each consisting of time slots. The apparatus sends a tone sample signal in one frame through a system interface having an input portion and an output portion,... | 01/31/1978 |
| 4071132 | Endless inked ribbon cartridge An endless printer ribbon cartridge for use in printing mechanisms for computer terminals, and the like, has a housing for mounting an endless wrapped ribbon there inside. The endless ribbon is fed from the inside of the wrapped portion over a predetermin... | 01/31/1978 |
| 4071703 | Time slot interchanger A time slot interchanger for connecting data samples between locations in a telephone system, including first and second data memories for storing and transmitting data samples, a number of cross point switches, a first data bus for connecting data betwee... | 01/31/1978 |
