Famous Patents
Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 5988483 | Anti-lubricant compositions There is described a method of securing against lateral motion two bodies held in face to face asperity contact to make a joint between the two bodies. Inserted into the interface between the two bodes is a material known as a galling agent, gall promoter... | 11/23/1999 |
| 5902360 | Surface-modifying tools In a method for removing metal from the surface of a workpiece by continuously rubbing the surface with a tool in a friction-inducing manner and in the presence of a friction-enhancing agent (an anti-lubricant) and in which a thin layer of the friction-en... | 05/11/1999 |
| 5837066 | Composition for making galled joint, process of making and process of using composition A composition which is effective in the making of a galled joint between two metal members in which there are gaps in the joint prior to and during its formation and which comprises a multiplicity of small metal particles and a gall-enhancing material, fo... | 11/17/1998 |
| 5643055 | Shaping metals A common way of shaping a metal workpiece by the removal of material therefrom involves rubbing contact, as experienced in a conventional wedge-shaped metal or ceramic cutting tool or in abrasive rubbing using grinding wheels. In conventional cutting and ... | 07/01/1997 |
| 5519182 | Galled joints made with electric heating A method involving galling for securing against lateral motion two bodies held in face-to-face asperity contact, thereby to make a join between the two bodies, in which in the preferred form of the method there is inserted into the interface of the surfac... | 05/21/1996 |
| 5348210 | Joints The invention relates to a method of making what may for convenience be regarded as friction joints--that is to say, joints between the touching surfaces of two parts that are held in contact (by a force as experienced in a light interference, not one suf... | 09/20/1994 |
