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 |
| 7016397 | Method of processing CDMA signal components The invention relates to a method of processing multipath-propagated components of a signal in a communications system. In the method, a signal transmitted on the radio channel of the communications system is received in a RAKE receiver and an impulse response of th... | 03/21/2006 |
| 6007279 | Chipper-toothed hole saw A hole-cutting device for attachment to a portable electric drill or similar rotating machine. The device has a cylindrical body with a rearward edge and a forward edge; a mounting plate is affixed across the rearward edge, and a series of chipper teeth a... | 12/28/1999 |
| 6000449 | Cutting head with exchangeable hard-metal cutting blades for wood working In a cutting head with exchangeable hard metal cutting blades for woodworking, wherein the cutting head includes a body with a center hub portion and arms extending radially therefrom and having support surfaces with cutting blades mounted thereon, the su... | 12/14/1999 |
| 5899251 | Wood machineable joint One or a plurality of machined timber elements of complimentary first and second configuration wherein each element is characterized by having at least one face surface (1,2) and one abutment surface (3,4) wherein said abutment surface incorporates in sai... | 05/04/1999 |
| 5593257 | Apparatus for removing hardened substances An apparatus for removing hardened substances such as putty or the like from a window sash without removing the window sash from its frame and without requiring a separate external guide comprises a rotary cutter member with a cutting blade and a sleeve m... | 01/14/1997 |
| 5507331 | Drilling/cutting bit, and method of making joint A drilling/cutting bit for forming joints in wooden members to be connected together by a coupling. The bit simultaneously forms a smaller width slot, a larger width slot, and a curved transition between the slots.... | 04/16/1996 |
| 5499667 | Drill/cutting bit, and method of making structural joint A drill/cutting tool for making joints in wooden members for receiving a metal plate connector. The drill/cutting tool can bore a hole, and then simultaneously cut a smaller width groove and larger width groove from the hole to complete forming the joint.... | 03/19/1996 |
| 5207540 | Apparatus for forming diamond-shaped edges on ornamental chains The apparatus is used for forming a diamond shape on ornamental chains (C) of variable width, and comprises a support having a slide guide flange (1A) with an intermediate gap (3) for the space required for the diamond-shaping tool (5), a shoe for lateral... | 05/04/1993 |
| 4580934 | Hole sizing tool A rotary hole sizing tool for enlarging a pre-existing hole comprising a shank portion, a disk-like cutting member having cutting edges formed on the axially advancing face thereof, a pilot member for engaging the walls of the pre-existing hole and aligni... | 04/08/1986 |
| 4146350 | Method and apparatus for manufacturing solid bodies A method and apparatus for forming solid bodies by removing material from solid workpieces. A workpiece is situated between oppositely rotating tools which remove material from the workpiece, these tools having hollow interiors facing each other and each ... | 03/27/1979 |
