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 |
| 6062537 | Fast pipe joint A fast pipe joint is composed of a sleeve and a main body. The sleeve is fitted over the main body such that an elastic piece extending upward from lower end of the inner edge of the sleeve is engaged with a retaining hole of the main body. The retaining ... | 05/16/2000 |
| 5911404 | Automatic fluid stopper and fluid stopper mounting spanner An automatic fluid stopper and fluid stopper mounting spanner including an automatic fluid stopper installed in a fluid outlet pipe and forced by fluid pressure to close the fluid outlet pipe, and a spanner for turning the automatic fluid stopper into or ... | 06/15/1999 |
| 5904174 | Auxiliary tap valve An auxiliary tap valve insertable into a fluid flow path of a tap is disclosed. The auxiliary tap valve includes a sleeve body with an auxiliary valve seat member, and an auxiliary valve member. The sleeve body has at least one constriction for restrictin... | 05/18/1999 |
| 5787921 | Gas container valve The gas container valve has a valve body (4) with a detachably mounted valve head (5) which by means of a valve spring (6) is pressed against a seat (3) of a bushing (7) screwed into the housing (2) of the gas container valve. The valve body has at its ot... | 08/04/1998 |
| 5628340 | Automatic valve An automatic valve, which is able to automatically seal a pipe when a tap is removed from the pipe, is disclosed. The valve consists of a collar, a disc and an "X" shaped member. The collar defines a central hole and a male threaded portion at an outer pe... | 05/13/1997 |
| 5628492 | Faucet connector device A faucet connector device for connecting between a water supply pipe and a faucet, comprises a connector body, a water stopper and a retaining washer. The connector body is a hollow cylinder with each of its inlet end and outlet end having an inner thread... | 05/13/1997 |
| 5344119 | Hose coupling A hose coupling includes a cylindrical member for coupling a faucet, an annular rib formed in the the cylindrical member, a ring element threadedly engaged in the cylindrical member, a packing engaged between the annular rib and the ring element so as to ... | 09/06/1994 |
| 5110088 | Water-control stopper A water-control stopper comprises a stopper body (30), an I-shaped valve (32), an actuator tube (52) and a nut (31). It is characterized in a simple structural framework which can be manufactured easily at a relatively low cost and may utilize either a ri... | 05/05/1992 |
| 4558819 | Automatic valve closer to prevent tampering with a thermostatic controlled radiator A tamper proof cartridge for use in nonelectric thermostatic valve sensors is disclosed. The usual cartridge includes a temperature sensor, operably connected to a push rod and an upper elongated stem by a spring. The upper stem terminates in an orifice s... | 12/17/1985 |
