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...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 7497402 | Storage and transportation of aluminium strip The invention is particularly directed to the problem of creep deformation in a coiled aluminum strip, which occurs during coiling and for a period thereafter. The problem arises because the profile of the strip across its width is not flat, and is in fact usually t... | 03/03/2009 |
| 6544358 | A1 alloy and method An aluminium alloy in the AA5XXX series has the composition: Si 0.10-0.25 %; Fe 0.18-0.30 %; Cu up to 0.5 %; Mn 0.4-0.7 %; Mg 3.0-3.5%; Cr up to 0.2%; and Ti up to 0.1%. Rolled and annealed sheet of the alloy is readily formed into shaped components for u... | 04/08/2003 |
| 6533877 | Process of manufacturing high strength aluminum foil High strength foil having dead fold foil characteristics is produced without the rolling and other production problems encountered with prior high strength foils by controlling manganese content, interannealing temperatures and, optionally, final annealin... | 03/18/2003 |
| 5783530 | Non-staining solid lubricants As a lubricant for cold-working of metal there is provided on the surface of the metal to be subjected to working a solid film of a saturated aliphatic monohydric alcohol having 14 to 18 carbon atoms. After the metal has been worked, the solid lubricant m... | 07/21/1998 |
| 5720904 | Electroconductive tin oxide Electroconductive doped tin (IV) oxide is produced in bulk by combining a first material which is selected from: a) a thermal precursor of a dopant element; b) a tin (II) compound comprising a dopant element; and c) a mixture of materials each falling within (a) or... | 02/24/1998 |
| 5395489 | Electrochemically roughening aluminum metal sheet A method of electrochemically roughening an aluminum metal sheet for use as a lithographic plate support comprises subjecting the sheet in an electrolyte to an alternating current treatment. Treatment is performed in the presence of at least one added com... | 03/07/1995 |
| 5062928 | Process for producing color change devices incorporating latent indicia and the resulting devices A process for producing color change devices incorporating latent indicia and color change devices incorporating latent indicia produced by the process. The process involves anodizing a color generating metal, having limited surface areas thereof covered ... | 11/05/1991 |
| 4930427 | Railroad gondola or hopper car, particularly a coal car A railroad gondola car having improved side sills, internal horizontal tension braces and diagonal braces with cast metal connectors at the ends of the braces and doubler plates on the side wall post flanges for reinforcement purposes where posts are conn... | 06/05/1990 |
| 4917728 | Aluminium alloy treatment A method of removing unwanted inclusion particles from a body of liquid aluminium or aluminium alloy by deposition thereof comprising 1. (a) adding to the liquid metal at least one alloying constituent in greater quantity than is eventually required and (b) ra... | 04/17/1990 |
| 4913840 | Production of stable anionic sols containing colloidal alumina hydrate Stable alkaline sols of anionic alumina hydrate may be made by calcining alumina trihydrate and milling the monohydrate produced under alkaline conditions. Alkaline sols containing both anionic alumina hydrate and anionic colloidal silica may be used for ... | 04/03/1990 |
| 4872908 | Metal treatment A method of forming a filter cake for filtering liquid metal from particles stable within the liquid metal on an inert, liquid metal permeable substrate in the flow path of the liquid metal to be filtered characterized by depositing the particles in the f... | 10/10/1989 |
| 4869750 | Liquid metal launder A method of controlling the movement of particles entrained in a liquid metal flowing along a confined flow path having a substantially horizontal base characterized by the steps of: (1) disposing a first planar device within the flow path to cause the sh... | 09/26/1989 |
| 4807423 | Device for feeding covers to a continuously operating container closing machine The present invention relates to a device for feeding covers to a continuously operating container closing machine. The device makes it possible continuously to feed covers to closure tools which revolve in a circular path and during their rotary movement... | 02/28/1989 |
| 4622072 | Surface coating compositions Coating compositions are disclosed comprising a conventional paint medium and an aluminium compound such as aluminium alkoxide which is stabilized by a volatile base, preferably an amine, together with added water. The coating compositions remain stable on pro... | 11/11/1986 |
