Did You Know...
...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 6245434 | Radio wave absorber composition, radio wave absorber member, radio wave absorber, and method for producing radio wave absorber member This invention relates to a composition for preparing a nonflammable, light-weight radio wave absorber which has a capacity of absorbing radio waves at low frequency bands of 30 MHz to 1,000 MHz or at high frequency bands of over 1,000 MHz, a radio wave a... | 06/12/2001 |
| 5932054 | Radio wave absorber composition, radio wave absorber member, radio wave absorber, and method for producing radio wave absorber member This invention relates to a composition for preparing a nonflammable, light-weight radio wave absorber which has a capacity of absorbing radio waves at low frequency bands of 30 MHz to 1,000 MHz or at high frequency bands of over 1,000 MHz, a radio wave a... | 08/03/1999 |
| 5283125 | Dew condensation preventing structure This invention relates to a space forming dew condensation preventing structure and a dew condensation preventing steel door disposed at the entrance to a room. This invention aims to provide a space forming dew condensation preventing structure which has... | 02/01/1994 |
| 5259872 | Fireproofing covering material This invention relates to a fireproofing covering material with cement matrix. Objects of this invention are to provide a fireproofing covering material with largely improved fire resistant performance and to provide a fireproofing covering material with ... | 11/09/1993 |
| 4770257 | Method of preventing loss of drilling mud during boring a hole in the ground This invention provides a method of preventing loss of muddy water used in boring a hole in the ground by a drill bit or the like with the muddy water introduced into the hole to stabilize hole walls and to remove slime resulting from the boring. When the... | 09/13/1988 |
| 4721159 | Method and device for conveying chemicals through borehole A capsule for conveying chemicals through a borehole for stopping lost circulation is totally made from a thermoplastic or fragile material or has a bottom plate made from such a material. The capsule containing the chemicals is let down until it reaches ... | 01/26/1988 |
| 4706753 | Method and device for conveying chemicals through borehole A capsule for conveying chemicals through a borehole for stopping lost circulation has a fragile bottom plate. A weight for destroying the bottom plate is suspended above the capsule by a cord which extends over knife edges. A messenger for cutting the co... | 11/17/1987 |
