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 |
| 5717685 | Transformer coupler for communication over various lines Apparatus for electrical line communication that includes a coupler at each of two or more locations along a pair of lines, the coupler having capacitive circuits serially connected with an air-core transformer. The capacitive circuit is designed to reson... | 02/10/1998 |
| 5704087 | Dental care apparatus and technique A toothbrush is equipped with electronic means for measuring the time interval between a visit to the dentist and the time when the next visit is to take place. The toothbrush remains "dormant" during that time interval. At the end of the interval, electr... | 01/06/1998 |
| 5660389 | History based trivia game with weighted scoring system A history-based trivia game wherein the answers to all questions are given in the form of a calendar year. Game components include a game board, throwing die, game pieces, playing cards and bonus markers. The object of the game is to be the first player t... | 08/26/1997 |
| 5647453 | Multi-purpose ladder apron A multi-purpose ladder utility apron comprised of four side panels, each adapted with a plurality of tool and accessory receptacles and further comprised of a fold up storage tray on the ladder's top providing additional temporary storage space. Closure f... | 07/15/1997 |
| 5592482 | Video distribution system using in-wall wiring A cable television/video distribution and selection system for distributing video signals throughout a home or building over in-wall electrical wiring. A remote device is connected to a display monitor or television set and also to the electrical wiring t... | 01/07/1997 |
| 5559377 | Transformer coupler for communication over various lines Apparatus for electrical line communication that includes a coupler at each of two or more locations along a pair of lines, the coupler having capacitive circuits serially connected with an air-core transformer. The capacitive circuit is designed to reson... | 09/24/1996 |
| 5529493 | Mixing and storage assembly for ceramic material A mixing and storage assembly for ceramic materials such as dental porcelain, comprising an open-cell foam pad disposed within a removable micro fine knit fabric sheath. The pad and surrounding sheath are together charged to a mixing and storage vessel wh... | 06/25/1996 |
| 5435997 | Topical agent and method for the treatment of pseudofolliculitis barbae A topical agent and method for the treatment and prevention of pseudofolliculitis barbae, related secondary bacterial infections and other skin conditions associated with shaving result from a combination of three ingredients, namely benzoyl peroxide, cam... | 07/25/1995 |
| 5415501 | Chuck Assembly and drill tool for deep hole drills A chuck assembly and drill tool for a deep hole drilling press wherein the shank of the drill is of great length and slidably received within the chuck assembly to various depths such that complete removal of the drill for the purpose of substitution with... | 05/16/1995 |
| 5316532 | Aquatic exercise and rehabilitation device An aquatic exercise and rehabilitation apparatus comprised of a fluid filled anti-splash treatment vessel and adjustable exercise cycle component having a unique pedal and handlebar assembly adaptable for use by individuals with unilaterally or bilaterall... | 05/31/1994 |
