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 |
| 7331067 | Toilet seat lifting and lowering device A toilet seat lifting and lowering device for pivoting the seat to its raised position and for pivoting it back to its horizontal position without having to touch the seat. A first lever arm is rigidly attached at one end to a first part of a torque transfer mechani... | 02/19/2008 |
| 7111333 | Toilet structure A toilet includes a bowl having a receiving portion, a converging portion in front of the receiving portion, an injecting portion and an inlet portion at opposite ends of the converging portion, and a discharging pipe behind the receiving portion and communicated wi... | 09/26/2006 |
| 7020908 | Toilets with quick flush trapways A toilet has a trapway extending between a bowl opening and an outlet opening. The trapway defines a curved, preferably uniform circular cross-section water dam region above the bowl opening, a down leg, and a straight out leg between the down leg and the outlet ope... | 04/04/2006 |
| 6957450 | Standardized recreational vehicle sanitary system A sanitary system including a toilet adapted for use in a recreational vehicle, and a recreational vehicle including the toilet and sanitary system. The sanitary system includes a horizontally offset waste storage receptacle to be installed in a stowage compartment ... | 10/25/2005 |
| 6944891 | Toilets with trapways having an air dam A toilet has a trapway extending between a bowl opening and an outlet opening. The trapway defines a curved water dam region above the bowl opening, a down leg, and a straight out leg between the down leg and the outlet opening. The out leg has an air dam cavity suc... | 09/20/2005 |
| 6782561 | Standardized recreational vehicle sanitary system A sanitary system including a toilet adapted for use in a recreational vehicle, and a recreational vehicle including the toilet and sanitary system. The sanitary system includes a horizontally offset waste storage receptacle to be installed in a stowage compartment ... | 08/31/2004 |
| 6415457 | Flushing device for toilet system The flushing device comprises a flush bowl (1) comprising an odor trap (8) on a bottom part (7) and comprises a flushing conduit (2) with flushing openings (14, 15, 16) on an upper edge (3). Flushing openings (14) in a frontal area (13) of the flushing co... | 07/09/2002 |
| 6292956 | Water flush toilet bowl and a cast molding apparatus thereof For forming a main body of a toilet bowl with which installation operation of a trap device is easy and which is superior in ornamental design possibilities and that has sufficient mechanical strength, the main body (1) of the toilet bowl is formed by cas... | 09/25/2001 |
| 5918325 | Flush toilet bowl A flush toilet bowl comprises a bowl part (1) and a discharge trap (2) formed continuously at the bottom of the bowl part. The discharge trap (2) further comprises a rising channel (22) extending in the obliquely upward direction from the bottom of the bo... | 07/06/1999 |
| 5819326 | Connecting apparatus for a toilet and a drainpipe In connecting a flushing port (2) of a toilet stool (1) which is formed so as to face the floor surface to which the toilet stool (1) is installed to a drainpipe (3) of the building, the connection is made by means of a flushing-side connecting pipe (6) w... | 10/13/1998 |
| 5706529 | Water closet A water closet having a trap drainage exit in a wall above a floor, in which at the time of flushing, a vent space is partitioned in a wall-like manner by water falling from a weir. A rise in the water level of a sump portion of the trap results, and air ... | 01/13/1998 |
| 5170515 | Water closet A water closet having a trap drainage exit in a wall above a floor, in which at the time of flushing, a vent space is partitioned in a wall-like manner by water falling from a weir. A rise in the water level of a sump portion of the trap results, and air ... | 12/15/1992 |
| 5054133 | Low water consumption toilet fixture A low consumption toilet fixture (10) has a bowl (20), a tank (16) having a central exit (43), a waterway passage extending from the tank to the bowl (20) and an angled trap (22) that has a bottom well (24). The downstream end (34) of the trap (22), inlet... | 10/08/1991 |
| 5031249 | Universal recreational vehicle toilet system with removable holding tank A universal recreational vehicle toilet system with a removable waste holding tank is provided to enable the recreational vehicle manufacturer to have wide latitude in the positioning of the toilet within a recreational vehicle. The toilet system includes... | 07/16/1991 |
| 4987616 | Water saver water closet A water closet has a flush tank which reduces the head of flush water presented to a downwardly converging bowl which receives waste to be discharged through an outlet to a siphon trap, the bowl having a rim which causes the flush water to be presented to... | 01/29/1991 |
| 4277854 | Water-saving toilet bowl The provision of a flush guiding means at a position with respect to main flush inlet to thereby constitute a very strong and swift correlated flushing action to readily remove the waste out of the bowl with a minimum amount of water and silent flushing o... | 07/14/1981 |
| 4232410 | Water closet A water closet including a body portion with an upper level and a lower level, and integral with the body portion, a closet bowl and an outlet conduit forming an odor seal at the bottom of the bowl. The odor seal has an outlet crest determining its highes... | 11/11/1980 |
