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| Number | Title | Issue Date |
| 4835762 | Optical memory device and system In the optical memory device of this invention, an annular information recording area is formed on one surface of a disc-shaped subplate which is rotatable about a center hole. Information is recorded on, or read from, the circular or spiral track of the ... | 05/30/1989 |
| 4714668 | Method for patterning layer having high reflectance using photosensitive material A method for patterning a layer having a high reflectance includes directly forming on a layer having a high reflectance a light-absorbing film having a ratio of transmitted light intensity to exposing incident light intensity of not more than 30% and for... | 12/22/1987 |
| 4707615 | Solid state image sensor A high-resolution image sensor uses integrated arrays of photosensitive elements in connection with a lens system which projects, onto the arrays, an erect, unmagnified, unreversed real image of the object being sensed (such as a line of a document). The ... | 11/17/1987 |
| 4697252 | Dynamic type semiconductor memory device A dynamic type semiconductor memory device is disclosed, which comprises an n-type semiconductor layer, at least one memory cell having a capacitor for storing charges of an amount corresponding to a logic value and a first transistor having source and dr... | 09/29/1987 |
| 4695871 | Light-triggered semiconductor device A light-triggered semiconductor device comprising a light-triggered semiconductor chip housed in an airtight package and a light guide connected to a light-sensitive area of the semiconductor chip, wherein that end face of the light guide which faces the ... | 09/22/1987 |
| 4692090 | Multistage hydraulic machine A multistage hydraulic machine includes a water chamber in a bottom ring of the highest-pressure stage. The water chamber supplies cooling water to seal gaps between rotary and stationary elements through a communication passage connected to the water cha... | 09/08/1987 |
| 4682204 | Fuse element for integrated circuit memory device A fuse element prepared from, for example, polycrystalline silicon is deposited on an insulating layer provided on the main surface of a semiconductor substrate in which an IC memory is formed. Connecting portions are integrally formed at both ends of the... | 07/21/1987 |
| 4647472 | Process of producing a semiconductor device A semiconductor device which has a protective film having a high blocking capacity against contaminating ions and a high shielding effect against an external electric field. The protective film is formed on a surface of the semiconductor device. The prote... | 03/03/1987 |
| 4646132 | IC socket having a backup power cell and circuit An IC socket is provided which has a cell acting as a back-up cell for an integrated circuit and a back-up circuit for supplying electric power of the cell to the integrated circuit.... | 02/24/1987 |
| 4644170 | Method of electron beam exposure A method of electron beam exposure comprising selectively exposing a resist film on a substrate a plurality of times with an electron beam whose dose is lower than a desired dose sufficient to produce a difference in molecular weight between the exposed a... | 02/17/1987 |
| 4641165 | Dynamic memory device with an RC circuit for inhibiting the effects of alpha particle radiation The dynamic memory device of the present invention is formed on an integrated semiconductor substrate subjected to alpha radiation and comprises a switching transistor having a switching terminal, an input-output terminal and a memory terminal; a bit line... | 02/03/1987 |
| 4641328 | Computed tomography apparatus Computed tomography apparatus in which data is acquired during one or more full rotational cycles and suitably stored by scanning a beating heart or similar objects and in which a complete image corresponding to a cross section of the beating heart is pro... | 02/03/1987 |
| 4635232 | Semiconductor memory device A semiconductor memory device is disclosed, which comprises a main memory, a decoder for selecting the main memory, an auxiliary memory, transistors connected between the auxiliary memory and the decoder for selecting the auxiliary memory according to the... | 01/06/1987 |
| 4633358 | H-switch circuit with an overcurrent protection circuit A H-switch circuit is disclosed for rotationally driving a DC motor in a forward or reverse direction. The H-switch circuit comprises overcurrent-detecting circuits for four output transistors, which are respectively provided in order to detect the output... | 12/30/1986 |
| 4633519 | Diversity reception system in a portable radio apparatus A portable radio used with this invention has two different types of antenna, such as a monopole antenna and a loop antenna. The diversity reception system continuously selects that one of the antenna which provides the better received signal. Antenna sel... | 12/30/1986 |
| 4625391 | Semiconductor device and method for manufacturing the same A method of forming electric conductive patterns comprising the steps of forming first conductive patterns on a semiconductor substrate directly or through an insulating layer with first insulating film being formed thereon, selectively forming second con... | 12/02/1986 |
| 4623994 | Scanning servo system for optical-disc information reproducing apparatus A scanning servo system, that is, a focusing servo system or a tracking servo system, for an optical-disc information reproducing apparatus includes (a) a light source for generating a light beam to scan a selected track location on an optical-disc wherei... | 11/18/1986 |
| 4618945 | Semiconductor memory device A semiconductor memory device has a plurality of memory cells arranged in a two-dimensional matrix array, word lines for connecting memory cells of each row to a row decoder, and bit lines for connecting memory cells of each column to a column decoder. Th... | 10/21/1986 |
| 4616342 | Semiconductor memory device A semiconductor memory device comprises word lines connected to a row of memory cells, pairs of bit lines each connected to a different column of memory cells, word line drive means for driving the word line, and data sensing means. The word line drive me... | 10/07/1986 |
| 4615105 | Electroacoustic transducer and a method for manufacturing thereof An electroacoustic transducer includes a base plate made of insulating material, a stationary electrode formed on one side of the base plate and made of electrically conductive material, an annular support formed on the same side of the base plate and sur... | 10/07/1986 |
| 4613230 | Wafer exposure apparatus A wafer exposure apparatus for covering the entire surface of a wafer with an array of desired chip patterns in a step and repeat process of projecting the desired chip pattern on a wafer by using a mask having the desired chip pattern. An alignment mark ... | 09/23/1986 |
| 4612631 | Static type semiconductor memory circuit A static type memory circuit has a plurality of memory cells arranged in a matrix form, a plurality of word lines and a plurality of pairs of bit lines, each of the word lines being coupled to memory cells on a corresponding row, each pair of the bit line... | 09/16/1986 |
| 4611372 | Method for manufacturing an ultrasonic transducer An ultrasonic transducer comprising piezoelectric resonators, a matching layer formed on the ultrasonic oscillation surfaces of the resonators, and a backing material adhered on the opposite surface to the ultrasonic oscillation surface, wherein a cylindr... | 09/16/1986 |
| 4612212 | Method for manufacturing E2 PROM An erase gate is formed for erasing data from a floating gate in a semiconductor memory device having the floating gate and a control gate. Furthermore, in order to achieve electrical insulation between the erase gate and the control gate, an insulating film f... | 09/16/1986 |
| 4608593 | Color television camera apparatus with self-diagnosis function A color television camera apparatus wherein a video signal is adjusted by the steps of detecting adjustment data with respect to predetermined adjustment items from the video signal corresponding to the pattern of a test chart, comparing the adjustment da... | 08/26/1986 |
| 4608668 | Semiconductor device A semiconductor device comprising a first conductor having first and second portions which are electrically disconnected from each other, and a second conductor, formed on an insulating film separating it from the first conductor, which is electrically co... | 08/26/1986 |
| 4606010 | Dynamic memory device A dynamic memory device has a plurality of column unit arrangements. Each of the column unit arrangements includes first and third bit lines connected through first and third switching transistors to a first input terminal of a sense amplifier and second ... | 08/12/1986 |
| 4604643 | Semiconductor rectifier device A semiconductor rectifier device includes a heat-radiating substrate, a flame-sprayed insulating layer formed directly on a surface of the substrate, at least one first flame-sprayed metal layer selectively formed on the surface of the radiation substrate... | 08/05/1986 |
| 4604580 | Nuclear magnetic resonance diagnostic apparatus Apparatus is provided in an NMR diagnostic apparatus for reducing or eliminating low frequency cyclic noise. The NMR signals are phase demodulated using reference signals having the same frequency as the excitation signals. A provision is made to change t... | 08/05/1986 |
| 4604533 | Sense amplifier A sense amplifier has a first differential amplifier and a second differential amplifier. The first differential amplifier has a pair of bipolar transistors as differential input elements which respectively receive differential input signals from a MOS ci... | 08/05/1986 |
| 4604641 | Semiconductor device and method for manufacturing the same The invention provides a semiconductor device having a semiconductor substrate with an active region including a buried contact and a field region including a field insulation layer. The device also includes a first polysilicon layer formed in the active ... | 08/05/1986 |
| 4600917 | Gate-turn-off thyristor failure detecting circuit A gate-turn-off thyristor failure detecting circuit includes a detector which detects an off-gate signal for a gate-turn-off thyristor and a current level detector which compares the signal with a predetermined value and produces an output signal indicati... | 07/15/1986 |
| 4600916 | Parallel analog-to-digital converter circuit A parallel analog-to-digital converter circuit comprises a plurality of level comparator circuits and a plurality of detectors. The level comparator circuits compare the level of one analog input signal with a plurality of reference levels. Any two or mor... | 07/15/1986 |
| 4599631 | Semiconductor apparatus having a zener diode integral with a resistor-transistor combination A semiconductor apparatus includes a p+ -type region formed in the surface area of an n- -type semiconductor layer formed on a p-type semiconductor substrate, and an n+ -type region which is formed in a contact relationshi... | 07/08/1986 |
| 4599742 | X-ray diagnostic apparatus An X-ray diagnostic apparatus comprises an X-ray radiation source for generating an X-ray and projecting the same toward an object, an X-ray detector for detecting the X-ray which has transmitted through the object to derive a total X-ray intensity distri... | 07/08/1986 |
| 4598382 | Multiplying circuit A multiplying circuit comprises an array circuit for producing a product of a multiplicand and multiplier by adding respective partial products together each of a multiplicand in each bit and a multiplier in each bit. The array circuit produces only an (n... | 07/01/1986 |
| 4597062 | Non-volatile semiconductor memory system A non-volatile semiconductor memory system includes a memory cell array having floating gate type MOS transistors, and a boosting circuit for boosting a write voltage applied to the memory system. A distributing circuit is further contained for selectivel... | 06/24/1986 |
| 4594863 | Washing machine A washing machine having an improved pulsator which includes a skirt, vanes projecting from the skirt, and a shaped projection having a planar surface located eccentrically from the center of rotation of the skirt and extended to a position higher than th... | 06/17/1986 |
| 4591801 | Differential amplifier circuit Disclosed is a differential amplifier circuit in which attenuators are provided to the inverting input terminal and non-inverting input terminal of the differential amplifier, respectively, whereby the amplitudes of input voltages are attenuated so that t... | 05/27/1986 |
| 4591894 | Semiconductor device having a plurality of CMOS I/O cells located at the periphery of the chip arranged in a direction perpendicular to the sides of the chip A semiconductor device comprises a gate array portion formed in the central portion of a chip, and a number of CMOS input/output cells arranged at the peripheral portion of the chip. Each input/output cell consists of a bonding pad, a p-channel MOS region... | 05/27/1986 |
