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 |
| 7432187 | Method for improving current distribution of a transparent electrode A method for improving current distribution of a transparent electrode includes forming a transparent electrode over a substrate; and forming a first mask. First openings are formed in the first mask. The first mask is also located over the transparent electrode. A ... | 10/07/2008 |
| 7314672 | Semiconductor layer formed by selective deposition and method for depositing semiconductor layer In a method for fabricating a nitride-based semiconductor laser which forms, by a selective deposition, a current narrowing structure and a structure confining a light in a horizontal direction in parallel to a substrate, when the nitride-based semiconductor is sele... | 01/01/2008 |
| 7279725 | Vertical diode structures A method of making a vertical diode structure is provided, the vertical diode structure having associated therewith a diode opening extending through an insulation layer and contacting an active region on a silicon wafer. A titanium silicide layer covers the interio... | 10/09/2007 |
| 7265374 | Light emitting semiconductor device A novel NPBL and ANPL light emitting semiconductor device and a method for fabricating the same are provided. In the present invention, plural nano-particles are applied in the active layer of the light emitting semiconductor device, so that the leakage current ther... | 09/04/2007 |
| 7193248 | LED backlighting system A liquid crystal display (LCD) device having non-white and white light emitting diodes and a liquid crystal display. A spectrum converting material is positioned between non-white LEDs and the LCD to convert the non-white light from the LEDs toward a white light spe... | 03/20/2007 |
| 7179756 | Light emitting device and method of manufacturing thereof A device of forming a film from an organic compound material at low cost is provided, using an organic compound material having high light emission efficiency. An organic compound film is formed on a substrate under an inert gas atmosphere by spraying of a colloid s... | 02/20/2007 |
| 7170103 | Wafer with vertical diode structures A method of making a vertical diode is provided, the vertical diode having associated therewith a diode opening extending through an insulation layer and contacting an active region on a silicon wafer. A titanium silicide layer covers the interior surface of the dio... | 01/30/2007 |
| 7138660 | Light emitting device The light emitting device has a light emitting diode which is made of a nitride semiconductor and a phosphor which absorbs a part of lights emitted from the light emitting diode and emits different lights with wavelengths other than those of the absorbed lights. The... | 11/21/2006 |
| 6979582 | Vertical-cavity surface emitting laser diode and method for producing the same The present invention provides a vertical-cavity surface emitting laser (VCSEL) diode and a method for producing the same. In this method, an n-type and a p-type ohmic contact electrodes are previously disposed, and then two pairs of distributed Bragger reflectors (... | 12/27/2005 |
| 6850013 | Infrared light emitting diodes An infrared light emitting diode arrangement comprising an infrared light emitting diode which emits positive luminescence when forward biased and emits negative luminescence when reverse biased. The diode is driven by an alternating forward and reverse bias input s... | 02/01/2005 |
| 6483094 | Solid state optical shutter A solid-state optoelectronic shutter having an input and an output, comprising a semiconductor material, having formed therein or thereon: a planar photodiode (24), having a planar surface, and optically communicating with the input; a planar LED layer (2... | 11/19/2002 |
| 6177689 | Photosensitive device having light transmissive sealing resin with carbonized outer surface A photosensitive semiconductor device includes a photocoupler sealed within a sealing body which is composed of a light-transmissive resin material. An outer surface of the sealing body is carbonized to block external light and thus minimized the adverse ... | 01/23/2001 |
| 6037188 | Method of manufacturing photosensitive semiconductor device The present invention provides a photosensitive semiconductor device comprising a sealing body composed of a resin material for sealing photosensitive semiconductor elemental devices, a inside of the sealing body having a light-transmissive property, a su... | 03/14/2000 |
| 4978208 | Photoelectronic diode spatial light modulator and eye protection goggles incorporating the same A spatial light modulator includes a photosensor diode and a photoemitting diode array, each having two semiconductive layers of opposite electrical polarities, and which are sandwiched together with layers of the same polarity (P or N) in electrical cont... | 12/18/1990 |
| 4194162 | Semiconductor device A semiconductor device includes a semiconductor layer on one side of a semiconductor body to define a pn-junction therebetween, diffraction gratings formed at a distance from each other on the top of said semiconductor layer, and electrodes formed between... | 03/18/1980 |