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 |
| 6175976 | Sleeping bag with adjustable foot space A sleeping bag having a compact foot space configuration for user warmth in cold ambient temperatures and an expanded foot space configuration for user comfort in mild to warm ambient temperatures. The sleeping bag includes an elongate shell defining a vo... | 01/23/2001 |
| 6073282 | Adjustable length sleeping bag An adjustable length sleeping bag suitable for use by persons of different height. The bag includes an elongate insulated shell having a longitudinal axis, an outer surface, a foot end and a head end. A fastening system on the outer surface of the shell c... | 06/13/2000 |
| 5421355 | Tent assembly having multiple configurations A tent assembly capable of assuming multiple configurations includes a shell having side walls made of flexible material in which at least a portion of the flexible material is water vapor permeable, a fly of flexible water impermeable material and a fram... | 06/06/1995 |
| 4884303 | Sleeping bag A sleeping bag comprising a pad and a cover with the cover comprising an upper and a lower section each comprising a layer of cushiony thermal insulation material, and an intermediate section comprising a layer of elastically stretchable material sandwich... | 12/05/1989 |
| 4842173 | Backpack frame A backpack frame of the present invention comprises a pair of spaced apart side frame members, a first cross plate member extending between the side frame members having a plurality of generally parallel slots therein extending in side-to-side direction w... | 06/27/1989 |
| 4827958 | Tent A tent comprising a plurality of walls, a roof and a frame system for holding the tent erect. The frame system comprises at least two frame structures, each being of generally inverted U-shape when erect and comprising a pair of substantially rigid poles ... | 05/09/1989 |
| 4745936 | Tent A tent having a plurality of sleeve(s) each of which, on erection of the tent, extends in an arch from one point adjacent the lower edge of the tent to an opposite point adjacent the lower edge. Each sleeve is closed at one end thereof and open at its oth... | 05/24/1988 |
