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Lawrence Welk, the bandleader who entertained millions of Americans over a generation of broadcasting his TV show, once received a patent: for a music-themed design of an ashtray.
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| Number | Title | Issue Date |
| 4843033 | Method for outdiffusion of zinc into III-V substrates using zinc tungsten silicide as dopant source A method of diffusion of dopants (e.g. zinc) into III-V substrates (e.g. GaAs) using metal silicide and dopants (e.g. Wx Siy :Zn) is disclosed. A cap layer (e.g. SiO2 or Si3 N4) is also used. The zinc... | 06/27/1989 |
| 4816116 | Semiconductor wafer transfer method and arm mechanism A complete integrated circuit processing module, wherein multiple processing stations, each with its own vacuum isolation, are located inside a single module which is held at hard vacuum. A wafer transport arm mechanism permits interchange of wafers among... | 03/28/1989 |
| 4815038 | Multiport ram memory cell A multiport random access memory cell includes a current mode latch (68) for storing two logic states and interface circuits for interfacing the input of the latch (68) with multiple input ports and the output of the latch (68) with multiple output ports.... | 03/21/1989 |
| 4776804 | Circuit board systems, connectors used therein, and methods for making the connectors and systems A circuit board system resiliently mounts a plurality of daughter boards with high circuit interconnection density on a mother board using pairs of mating connectors having welded contact members accommodated in novel arrangements in the respective connec... | 10/11/1988 |
| 4735452 | Article gripper assembly An article gripper assembly comprising a support member, a movable base member movable back and forth in a predetermined direction with respect to the support member, a pair of finger members movable toward and away from each other with respect to the bas... | 04/05/1988 |
| 4726885 | Selenidization passivation A method of passivation of HG1-x Cdx Te by anodic selenidization is disclosed; in preferred embodiments the selenidization is by anodic growing of the selenides in an electrolyte solution of sodium selenide in water and ethylene glyc... | 02/23/1988 |
| 4725747 | Integrated circuit distributed geometry to reduce switching noise A complimentary output pair (10) having a P-channel transistor (12) and an N-channel transistor (14) prevents output voltage spikes due to rapid changes in current with respect to time at the Vcc power supply and ground (32) nodes by using a "g... | 02/16/1988 |
| 4717681 | Method of making a heterojunction bipolar transistor with SIPOS A wafer process flow encompasses an arbitray repeated layered structure of heteroepitaxial layers of silicon based films with process control throughout the strata of chemical potential and recombination velocity, suitable for both high performance MOS an... | 01/05/1988 |
| 4712242 | Speaker-independent word recognizer Speaker-independent word recognition is performed, based on a small acoustically distinct vocabulary, with minimal hardware requirements. After a simple preconditioning filter, the zero crossing intervals of the input speech are measured and sorted by dur... | 12/08/1987 |
| 4702795 | Trench etch process A plasma dry etch process for etching deep trenches in single crystal silicon material with controlled wall profile, for trench capacitors or trench isolation structures. HCl is used as an etchant under RIE conditions with a SiO2 hard mask. The SiO2 hard ... | 10/27/1987 |
| 4697330 | Floating gate memory process with improved dielectric The dielectric between the floating gate and the control gate, in an EEPROM or other floating gate memory is made by forming an oxide/nitride stack over the (first polysilicon) control gate. This dielectric not only provides a very high specific capacitan... | 10/06/1987 |
| 4695872 | High density micropackage for IC chips A micropackage for providing high density, three dimensional packaging of integrated circuit chips. A chipmount (10) includes a plurality of channels (36) on the bottom surface thereof for holding a corresponding plurality of integrated circuit chips (16)... | 09/22/1987 |
| 4695962 | Speaking apparatus having differing speech modes for word and phrase synthesis The present invention provides a conversion between a speech mode in which each word is clearly enunciated as if spoken in isolation and in which a phrase is spoken as a whole taking into account the influence of adjacent words. In the phrase mode, word e... | 09/22/1987 |
| 4696042 | Syllable boundary recognition from phonological linguistic unit string data The present invention provides syllable boundaries from a string of phonological linguistic unit indicia and word boundary data. The syllable boundary recognizer places a syllable boundary either at the next following word boundary or prior to the second ... | 09/22/1987 |
| 4686602 | Protective circuit arrangement for protecting semiconductor components A protective circuit arrangement is described for protecting semiconductor components connected to input and output terminals (10) against overvoltages in bipolar integrated circuits. The circuit arrangement contains at least one supply voltage terminal (... | 08/11/1987 |
| 4684812 | Switching circuit for a detector array An infrared imager, wherein a transparent gate is separated from a very narrow bandgap semiconductor (such as HgCdTe) by a thin dielectric. The gate is biased to create a depletion well in a semiconductor, and photo-generated carriers are collected in the... | 08/04/1987 |
| 4680579 | Optical system for projection display using spatial light modulator device The projection display of the present invention employs a light source, a spatial light modulator such as a deformable mirror device having a plurality of individually electrically deformable mirror cells and Schlierin optics to project light from deforme... | 07/14/1987 |
| 4677735 | Method of providing buried contacts for N and P channel devices in an SOI-CMOS process using a single N+polycrystalline silicon layer The disclosure relates to a method for realizing a fully functional buried level of interconnect using only a single level of a silicide over N+ polycrystalline silicon, the latter serving as the gate material for both the N channel and P channel devices ... | 07/07/1987 |
| 4676866 | Process to increase tin thickness A local interconnect system for VLSI integrated circuits. During self-aligned silicidation of exposed moat and gate regions in a nitrogen atmosphere, a conductive titanium nitride layer is formed overall. A second titanium layer is then deposited overall ... | 06/30/1987 |
| 4675073 | Tin etch process A plasma etch process for etching titanium nitride selectively with respect to titanium silicides. A reducing electrode, a low flow rate, and a non-copious fluorine source (such as CF4) are used to achieve a fluorine-deficient plasma. Preferabl... | 06/23/1987 |
| 4658137 | Electron detector Electron detector apparatus and method for detecting secondary electrons released from a body, of particular utility in testing integrated circuits in an operational state. The apparatus utilizes a magnetic lens having an axis of symmetry, for producing a... | 04/14/1987 |
| 4536835 | Direct A.C. to A.C. converter controlled by a data processor A direct AC to AC supply converter in which the control of the bidirectional switches connecting each conductor of a polyphase input supply to each conductor of an output supply is effected by a data processor, the operation of the program of which is syn... | 08/20/1985 |
| 4476456 | Combination of an analog to digital converter and sampling switch A sampling switch circuit is provided for an analog to digital converter that provides for the scaling of two switches connected to the converter comparator. The comparator receives two input voltages which are switched to reference voltages. To correct a... | 10/09/1984 |
| 4468725 | Direct AC converter for converting a balanced AC polyphase input to an output voltage A direct AC converter for converting a polyphase AC input supply into an output DC or single or polyphase AC supply of amplitude, phase, frequency or power factor which is different from the input supply using a matrix of bidirectional switches having con... | 08/28/1984 |
| 4466174 | Method for fabricating MESFET device using a double LOCOS process MESFET devices are fabricated on a semiconductor substrate using a LOCOS (localized oxidation of silicon) process twice during the fabrication. The first LOCOS process provides device separation with a self-aligned thick-field oxide (SATO). The second LOC... | 08/21/1984 |
| 4459684 | Nonvolatile JRAM cell using nonvolatile capacitance for information retrieval Non-volatile JRAM cell having interelectrode non-volatile capacitance which is readable and varies with the electrical charge on elements of the device. To program the nonvolatile capacitance, the address lines (word line and bit line) are biased so that ... | 07/10/1984 |
| 4458237 | Combination of an analog to digital converter with a sampling switch error correction circuit and least significant bit circuit An analog to digital converter is provided which includes a binary weighted capacitor array connected with a series of resistors structured as an array. The converter provides for charge correction to compensate for any capacitance deviation in the capaci... | 07/03/1984 |
| 4451821 | Combination of analog to digital converter and error correction circuit Error correction circuitry for an analog to digital converter is disclosed which provides for the correction of charge in a charge redistribution converter architecture. This conversion technique as implemented requires that a binary weighted capacitor ar... | 05/29/1984 |
| 4443845 | Memory system having a common interface A data processing system having separate read-only memory and read-write memory integrated circuits coupled to a central processing unit via the same interface system. The data processing system is comprised of bus means having either command, address, or... | 04/17/1984 |
| 4433604 | Frequency domain digital encoding technique for musical signals An apparatus for encoding and decoding musical signals in digital form employs conversion to the frequency domain. Discrete Fourier transform coefficients are calculated from time domain digital data at selected frequencies which are organized in sets of ... | 02/28/1984 |
| 4425996 | Apparatus for transporting workpieces through a processing system Transportation apparatus comprising two parallel chains extending in the transport direction. Workpiece carriers are disposed between the chains and extend parallel to each other. Each workpiece carrier includes two support elements extending parallel to ... | 01/17/1984 |
| 4413313 | Electrical inverters An inverter which includes a resonant electrical circuit and a charging transistor arranged to charge an energy storage component of the resonant circuit periodically in synchronism with oscillations in the circuit so as to maintain the oscillations. A pa... | 11/01/1983 |
| 4409665 | Turn-off-processor between keystrokes A calculator having constant memory utilizing a classical CMOS metal gate process, a low power microcomputer with on-chip and external constant memory capability, and multiple partition power control of circuit groups. Incorporation of a first and second ... | 10/11/1983 |
| 4399331 | Telephone microprocessor system An electronic telephone including a keyboard input, a telephone line interface, a speech synthesis device with a control line and an audio line coupled to the telephone line interface, a message recorder with an audio line coupled to a telephone line inte... | 08/16/1983 |
| 4387283 | Apparatus and method of forming aluminum balls for ball bonding An apparatus and method of forming aluminum balls utilized for ball bonding. The aluminum balls are formed in a moist argon atmosphere by applying an electrical potential across a spark gap causing a spark to occur which causes the end of the aluminum wir... | 06/07/1983 |
| 4386410 | Display controller for multiple scrolling regions A display control system which operates asynchronously with a microprocessor includes a display controller, display memory, character memory means, and a visual character attribute generator. By linking one or more row attribute bytes, or pointers, to eac... | 05/31/1983 |
| 4375097 | Transparent intelligent network for data and voice A transparent intelligent communication network having nodes and communication links between the nodes and providing improved system input features by including the sampling of customer inputs at different rates according to their output rates of data at ... | 02/22/1983 |
| 4334306 | Transparent intelligent network for data and voice A transparent intelligent communication network having both terrestrial and satellite links between nodes and providing improved accuracy and speed in transmission by distinguishing between data requiring rapid receipt at the receiving node and other data... | 06/08/1982 |
| 4333143 | Input process sequence controller An input process sequence controller provides a sophisticated communication processing link between a central processor and peripheral digital apparatus. Data is transmitted from the peripheral digital apparatus to the process sequence controller whose fu... | 06/01/1982 |
| 4331708 | Method of fabricating narrow deep grooves in silicon A method of fabricating deep grooves having submicron widths in a semiconductor substrate. A pattern of submicron oxidation masking elements formed on the substrate surface serves as an oxidation mask for a thick oxide layer. After forming the oxide layer... | 05/25/1982 |
