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3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 5612609 | Continuous conduction mode switching power supply with improved power factor correction A power factor correction circuit in which an inductor current is detected separately as a charging current indication signal and a discharging current indication signal by using a current sense resistor and a current sense circuit. A scaled-down output D... | 03/18/1997 |
| 5534728 | Semiconductor device having a corrosion-resistant metal wiring layer A semiconductor device includes a metal wiring layer having a plurality of parallel, actual metal lines, with an endmost one of the actual metal lines being disposed adjacent a wiring-free region. The actual metal lines are electrically connected to an ac... | 07/09/1996 |
| 5501995 | Method for manufacturing a gate electrode of a MOS transistor A method for manufacturing an electrode, e.g., a gate electrode of a MOS transistor, and an electrode and MOS transistor manufactured in accordance with this method. The method includes the steps of forming a first diffusion preventing layer on an underly... | 03/26/1996 |
| 5495452 | Circuit for controlling a self-refresh period in a semiconductor memory device A circuit which controls a self-refresh period of a semiconductor memory device includes a pulse generating circuit which outputs a periodic pulse train in response to an external control signal, a frequency-dividing circuit which outputs a plurality of p... | 02/27/1996 |
| 5485426 | Semiconductor memory device having a structure for driving input/output lines at a high speed A semiconductor memory device for alternately selecting two groups of input/output lines according to a predetermined column address. A first group of a number of the input/output line pairs is driven by activation of any one of the selection signals with... | 01/16/1996 |
| 5476807 | Method for forming fine patterns in a semiconductor device A method for forming a fine pattern, e.g., for forming the storage electrodes of the capacitors of the memory cells of semiconductor memory devices, which includes the steps of depositing a mask layer on the layer to be patterned, depositing a photoresist... | 12/19/1995 |
| 5477497 | Semiconductor memory device A semiconductor memory device which includes, in a first embodiment, a first PMOS transistor having a source electrode coupled to a signal transport line, a second PMOS transistor having a source electrode coupled to an inverted signal transport line, a d... | 12/19/1995 |
| 5475704 | Optical processor with booster output A nonlinear optical device, operating in an optical bistability mode, capable of carrying out amplification, commutation, switching and computing of optical signals, comprises, a pair of directional couplers formed by optically coupling a pair of waveguid... | 12/12/1995 |
| 5475647 | Flash write circuit for a semiconductor memory device A semiconductor memory device having a plurality of memory blocks and a plurality of I/O control circuits operatively associated with respective ones of the memory blocks. Each of the I/O control circuits includes a flash write enable signal generator res... | 12/12/1995 |
| 5473563 | Nonvolatile semiconductor memory A nonvolatile semiconductor memory device comprising an array of cell units, each cell unit including at least one memory transistor which has a floating gate and a control gate, the array being divided into a plurality of memory blocks each having a cert... | 12/05/1995 |
| 5467032 | Word line driver circuit for a semiconductor memory device A word line driver circuit for use in a semiconductor memory device for driving a word line of the memory device to a word line driving voltage having a voltage level greater than that of a power supply voltage includes a control circuit and a word line d... | 11/14/1995 |
| 5466628 | Method of manufacturing trench capacitor with a recessed field oxide layer A capacitor of a semiconductor device has a plate electrode which process margin and a method of manufacturing same are disclosed. The plate electrode has a planarized surface and borders a source region. A recessed field oxide layer defining an active re... | 11/14/1995 |
| 5467039 | Chip initialization signal generating circuit A circuit which is particularly useful as a chip initialization signal generating circuit for initializing the circuits of a semiconductor memory device includes a time delay circuit for generating a second signal a predetermined time after a first signal... | 11/14/1995 |
| 5460994 | Semiconductor device having vertical conduction transistors and cylindrical cell gates A semiconductor device, e.g., a DRAM, having vertical conduction transistors and cylindrical cell gates, which includes a plurality of spaced-apart trench isolation regions formed in a semiconductor substrate, a plurality of bit lines formed on the semico... | 10/24/1995 |
| 5450030 | Circuit for adjusting a circuit parameter of a circuit A circuit parameter adjustment circuit for adjusting a circuit parameter (e.g., resistance or capacitance) of a circuit having N network elements connected between two nodes. The circuit parameter adjustment circuit includes N zapping devices and N switch... | 09/12/1995 |
| 5450289 | Semiconductor package and a printed circuit board applicable to its mounting An arrangement for vertically mounting a semiconductor device to a substrate, e.g., a printed circuit board (PCB), in which a plurality of sequentially arranged external leads of the semiconductor device include at least three different sets of non-consec... | 09/12/1995 |
| 5448199 | Internal supply voltage generation circuit An internal supply voltage generation circuit, producing an internal supply voltage during a normal mode of operation and an external supply voltage during a burn-in mode of operation. The circuit including a plurality of fuses, the operation of which est... | 09/05/1995 |
| 5443993 | Method for manufacturing a capacitor for a semiconductor device A method for manufacturing a capacitor for a semiconductor device, which includes the steps of forming a first conductive layer on a semiconductor substrate, forming a first pattern by patterning the first conductive layer, sequentially forming a second c... | 08/22/1995 |
| 5438543 | Semiconductor memory using low power supply voltage A peripheral/refresh control circuit for a semiconductor memory device, e.g., a dynamic random access memory (DRAM), which includes a first pull-up device connected between a supply voltage and the pull-up node of a sense amplifier, the first pull-up devi... | 08/01/1995 |
| 5436500 | Surface mount semiconductor package A surface mount semiconductor package having a novel lead configuration which facilitates a higher packing density than presently available semiconductor packages. More particularly, the package includes a plurality of electrical leads each having a later... | 07/25/1995 |
| 5428247 | Down-bonded lead-on-chip type semiconductor device Disclosed is a semiconductor device wherein the down bonding and the mounting of multi-pin is made possible. A conductive member adhered to the bottom surface of the semiconductor element. The conductive member and the specific pad of the semiconductor el... | 06/27/1995 |
| 5418633 | Multilayered liquid crystal display with transparent columns disposed within pixel areas A liquid crystal display device includes laminated plural electrical field effect type liquid crystal layers with light-transmitting electrically insulating layers inserted therein, and liquid crystal injection holes for forming the columns for supporting... | 05/23/1995 |
| 5416759 | Variable gain digital servo system with improved resolution and reduced quantization error A digital servo system for servo controlling a prescribed function of a host device, e.g., the tracking servo function of an optical disk drive. The digital servo system includes a variable gain amplifier for amplifying an analog error signal issued by th... | 05/16/1995 |
| 5408191 | Input buffer having a compensation circuit for stabilizing the output thereof An input buffer particularly suitable for a semiconductor device includes a CMOS inverter for buffering an input signal which varies between first and second logic levels and producing an output signal at an output node thereof which is the logical invers... | 04/18/1995 |
| 5397907 | Field effect transistor and fabricating method thereof A MESFET which includes a semi-insulating substrate, e.g., a GaAs substrate, an insulating layer formed on a portion of the upper surface of the substrate, a first semiconductor layer formed on the upper surface of the substrate adjacent to opposite sides... | 03/14/1995 |
| 5392141 | Multi-layered liquid crystal device having columns supporting insulating layers therebetween and method of production A liquid crystal display device having a multilayer structure includes at least one substrate, first electrodes arranged on the substrate into a predetermined pattern for constituting a plurality of pixels and second electrodes arranged across from the fi... | 02/21/1995 |
| 5392232 | Semiconductor memory device A semiconductor memory device including a memory cell array which is formed of each of memory cells connected to intersection of a plurality of bit lines and word lines is provided such that, during designing the layout, a length of a storage electrode of... | 02/21/1995 |
| 5386307 | Method of manufacturing multi-layered liquid crystal using wells for columns and dissolvable layers between liquid crystal layers A method of manufacturing a multi-layered liquid crystal for a liquid crystal display device in which an electric-field effect type liquid crystal layer is placed between opposing upper and lower electrodes and a plurality of insulating layers are alterna... | 01/31/1995 |
| 5386199 | Compressor capable of compressing large input signal with minimal distortion A compressor which is capable of compressing an input signal having an extremely large magnitude, without the signal being distorted and without the necessity of a additional circuit element such as an automatic level controller external thereto. The comp... | 01/31/1995 |
| 5384736 | Data output circuit of a semiconductor memory device A data output circuit of a semiconductor memory device matches an equalizing level of voltages at data lines in a pair with a logic threshold voltage of data output buffers. The data output circuit having an equalizing transistor connected between first a... | 01/24/1995 |
| 5361094 | CCD-type color video camera with gamma correction A video signal processing circuit of a CCD-type color video camera includes a gamma-correcting circuit section, a delay circuit section, a chrominance signal processor and a luminance signal processor. Accordingly, the circuit is configured such that gamm... | 11/01/1994 |
| 5355020 | Semiconductor device having a multi-layer metal contact A wiring layer of a semiconductor device having a novel contact structure is disclosed. The semiconductor device includes a semiconductor substrate, an insulating layer having an opening (contact hole or via) and a first conductive layer formed on the ins... | 10/11/1994 |
| 5352630 | Method for forming inter-metal dielectrics in a semiconductor device A method for forming an inter-metal dielectrics in a semiconductor device includes the steps of sequentially forming a first and second insulating layers over a semiconductor substrate with a patterned metal layers, etching-back the second insulating laye... | 10/04/1994 |
| 5350707 | Method for making a capacitor having an electrode surface with a plurality of trenches formed therein The present invention provides a semiconductor device having a capacitor that is formed through: a first step of forming a polysilicon layer having a rough surface after a nonconductive layer is applied to a base substrate; a second step of etching back a... | 09/27/1994 |
| 5350715 | Chip identification scheme A method for determining the original location of each of a multiplicity of semiconductor chips fabricated on a common wafer, including the step of applying location identification data to each of the chips, wherein the location identification data is ind... | 09/27/1994 |
| 5349593 | Optical regenerator using bistable fabry-perot interferometer Disclosed herein is an all-optical regenerator which is controlled by an external input optical signal for the generation of an output optical signal satisfying certain preset parameters defining the shape and the amplitude of the output optical signal. T... | 09/20/1994 |
| 5343354 | Stacked trench capacitor and a method for making the same A stacked trench capacitor including a first trench formed in a semiconductor substrate, an insulating material, preferably BPSG, substantially filling the first trench to thereby define an isolation region of the substrate, a second trench formed in the ... | 08/30/1994 |
| 5341027 | Semiconductor chip having notches formed in peripheral edges thereof A semiconductor device which includes a semiconductor integrated circuit chip provided with a plurality of chip bonding pads contiguous with the peripheral edge of the chip, and a plurality of leads directly bonded to respective ones of the chip bonding p... | 08/23/1994 |
| 5336626 | Method of manufacturing a MESFET with an epitaxial void The present invention relates to a MESFET in which source and drain regions with inverse slopes are formed on a semi-insulating semiconductor substarate having the insulating layer by using the growth property according to the crystal direction and a chan... | 08/09/1994 |
| 5328860 | Method of manufacturing a semiconductor device A method for manufacturing BiCMOS semiconductor devices in which an oxide layer formed on the surface of a semiconductor substrate for the purpose of facilitating formation of spacers adjacent to sidewalls of the gates of the MOS transistors thereof is on... | 07/12/1994 |
