Did You Know...
...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 |
| 7255930 | Cap nut for envelopment casting, casting including the cap nut and method of enveloping the cap nut in casting A cap nut to be enveloped in a casting made of casting material includes a substantially cylindrical body. The body has a first end and a second end adjacent to a top end surface of the body. The body has a hole and an outer peripheral surface to be enveloped in the... | 08/14/2007 |
| 7211509 | Method for enhancing the nucleation and morphology of ruthenium films on dielectric substrates using amine containing compounds Methods for depositing a ruthenium metal layer on a dielectric substrate are provided. The methods involve, for instance, exposing the dielectric substrate to an amine-containing compound, followed by exposing the substrate to a ruthenium precursor and an optional c... | 05/01/2007 |
| 7140825 | Self tapping bolt A self tapping bolt which fastens a mounting member and a receiving member while the bolt cuts internal threads on an inner surface of a tap drill hole prepared in the receiving member. The bolt includes at least one groove formed near an end of a threaded portion o... | 11/28/2006 |
| 6495268 | Tapered corrosion protection of tubes at mud drum location A method of corrosion protecting a tube having an end portion extending into a tube receiving hole of a mud drum of a boiler and the tube produced by that method. The end portion of the tube is provided with a corrosion resistant cladding layer which may ... | 12/17/2002 |
| 5837428 | Etching method for extending i-line photolithography to 0.25 micron linewidth A method for forming a patterned layer within an integrated circuit. There is first provided a substrate having formed thereupon a blanket target layer. Formed upon the blanket target layer is a blanket focusing layer, where the blanket focusing layer is ... | 11/17/1998 |
| 5309748 | Metal extrusion A billet of extrudable metal, particularly an Al alloy is tapered at its back end. The billet is compressed longitudinally so that the metal of the tapered end is upset transversely. The compressed billet is hot extruded. The upsetting improves the fractu... | 05/10/1994 |
| 5194222 | Alloy and composite steel tube with corrosion resistance in combustion environment where V, NA, S and C1 are present An alloy exhibiting corrosion resistance in a combustion environment where V, Na, S and Cl are present comprises, in weight percent, not more than 0.05% C, 0.02-0.5% Si, 0.02-0.5% Mn, 15-35% Cr, 0.5-4% Mo, 10-40% Co, 5-15% Fe, 0.5-5% W, 0.0003-0.005% Ca a... | 03/16/1993 |
| 5051315 | Compacting scrap metal in a tube for recycling A method is disclosed of making a billet comprising a mass of compressed swarf jacketed in a tubular jacket. A number of similar indentations are formed in the ends of the jacket. The indentations are symmetrically disposed about the axis of the billet. T... | 09/24/1991 |
| 5021299 | Composite casting for adding lithium to molten alloys Method for the charging and controlled addition of pre-alloys to molten alloys of metals reactive and nonreactive at room temperature which are held in a crucible. To permit pre-alloys with a high percentage of reactive metal to be handled more easily, a ... | 06/04/1991 |
| 4572875 | Blank for a thread forming screw A method for manufacturing thread-forming screws wherein the tapered leading end of the screws can include thread portions or sections having sharp crests but wherein the thread-forming screws can be made using conventional flat thread rolling dies. Also ... | 02/25/1986 |
| 4476194 | Contour forming conical shapes A truncated conical segment is made by the steps of longitudinally welding two pieces of metal, then contour rolling the weldment to preferentially reduce one of the pieces of the weldment more than the other. This provides a skewed trapezoid shape which ... | 10/09/1984 |
| 4315972 | Casting whose molding takes place during its recovery by means of filtration-dehydration A casting consisting of a dehydrated agglomerate of particulate material and shaped such that one of its right angle projections is in the form of a trapezoid whose sides include angles greater than 90°, the sides being joined by means of curved surfaces... | 02/16/1982 |
| 4269902 | Extruding and tapping screw and blank for manufacture of such screw A threaded fastener particularly designed for extruding and forming threads in a sheet metal material. A threaded shank region and threaded, generally, conical point region are interconnected by a thread forming and extruding region which includes a plura... | 05/26/1981 |
| 4186586 | Billet and process for producing a tubular body by forced plastic deformation An improved billet and process for producing a tubular body by forced plastic deformation is disclosed. The billet includes a metallic tubular sheath, a metallic center core and a salt intermediate core. The radial thickness of the metallic tubular sheath... | 02/05/1980 |
| 4104446 | Self-tapping or thread-forming screw An improved self-tapping or thread-forming screw where the thread configuration on the screw end swages or forms the thread in an object to be threaded rather than cutting and removing a portion of the material of the object. The screw is provided with a ... | 08/01/1978 |
| 4042342 | Blanks for making self-thread forming threaded fasteners A blank is formed for providing a self-thread forming threaded fastener having a straight thread on a shank of circular cross section and tapered thread of the work-entering end. The tapered portion of the thread is of lobular root, pitch and crest surfac... | 08/16/1977 |
