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...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 5879955 | Method for fabricating an array of ultra-small pores for chalcogenide memory cells A method for fabricating an array of ultra-small pores for use in chalcogenide memory cells. A layer of a first material is applied onto a substrate. A portion of the layer of the first material is then removed to define an upper surface with vertical sur... | 03/09/1999 |
| 5793224 | Voltage generator for antifuse programming Circuitry in an integrated circuit for programming an antifuse element is disclosed. In one embodiment, oscillating voltages are produced at two nodes, and these voltages are approximately 180° out of phase with one another. In another embodiment, an osc... | 08/11/1998 |
| 5789758 | Chalcogenide memory cell with a plurality of chalcogenide electrodes A chalcogenide memory cell with chalcogenide electrodes positioned on both sides of the active chalcogenide region of the memory cell. The chalcogenide memory cell includes upper and lower chalcogenide electrodes with a dielectric layer positioned therebe... | 08/04/1998 |
| 5761108 | Frequency-variable oscillator circuit An integrated circuit semiconductor device includes a charge pump to provide current at a potential which is greater than a supply potential. The charge pump utilizes an oscillator, which causes the charge pump to cycle, and thereby provide a continuous o... | 06/02/1998 |
| 5753947 | Very high-density DRAM cell structure and method for fabricating it A vertical transistor semiconductor and method of making a vertical transistor is provided. The vertical transistor is particularly suited for use in a DRAM cell. The structure permits a DRAM cell to be fabricated with a comparatively low number of maskin... | 05/19/1998 |
| 5751012 | Polysilicon pillar diode for use in a non-volatile memory cell There is described a memory cell having a vertically oriented polysilicon pillar diode for use in delivering large current flow through a variable resistance material memory element. The pillar diode comprises a plurality of polysilicon layers disposed in... | 05/12/1998 |
| 5740111 | Charge pump disablement apparatus Apparatus is disclosed for disabling the charge pumps in an integrated circuit memory when data is being read from the memory.... | 04/14/1998 |
| 5730871 | Downhole fluid separation system A fluid separation system is disclosed for installation within a wellbore that penetrates a production formation and a discharge formation. The system comprises a first pump and a second pump each operatively connected to a means for operation, such as a ... | 03/24/1998 |
| 5725313 | Rolling cutter drill bits A rolling cutter drill bit comprises a body and three legs, each leg having a cantilevered bearing spindle, a rolling cutter rotatably mounted on the bearing spindle, lubricant delivering means within the beating spindle, and a floating thrust bearing ele... | 03/10/1998 |
| 5696028 | Method to form an insulative barrier useful in field emission displays for reducing surface leakage A field emitter display having reduced surface leakage comprising at least one emitter tip surrounded by a dielectric region. The dielectric region is formed of a composite of insulative layers, at least one of which has fins extending toward the emitter ... | 12/09/1997 |
| 5677649 | Frequency-variable oscillator controlled high efficiency charge pump An integrated circuit semiconductor device includes a charge pump to provide current at a potential which is greater than a supply potential. The charge pump utilizes an oscillator, which causes the charge pump to cycle, and thereby provide a continuous o... | 10/14/1997 |
| 5653619 | Method to form self-aligned gate structures and focus rings A selective etching and chemical mechanical planarization process is employed for the formation of self-aligned gate and focus ring structures surrounding an electron emission tip for use in field emission displays. The process is employed to construct an... | 08/05/1997 |
| 5642073 | System powered with inter-coupled charge pumps A multi-phase charge pump continuously pumps to establish a DC voltage outside the range of supply and reference voltages. The multi-phase charge pump in one embodiment includes four stages operating in a ring with a four-phase clock. Each stage includes ... | 06/24/1997 |
| 5641545 | Method to deposit highly conformal CVD films A method for chemical vapor deposition onto high aspect ratio features. Process gases including a reactant species are supplied to the surface and sufficient primary energy is supplied to the surface so as to cause the reactant species to deposit on the s... | 06/24/1997 |
