Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 6518718 | Speed electromotive force phase control system adapted to low speed Three-phase/d-q converters convert an output voltage V outputted from a power converter and a coil current flowing through a propulsion coil to a voltage and a current in a dq rotary coordinate system, respectively. A speed electromotive force observer es... | 02/11/2003 |
| 6515440 | Departure control system using simulated phase In the control system, a propulsion force is computed by a propulsion force computing unit based on a current command value outputted from a speed controller, an acceleration is computed by an acceleration computing unit based on the propulsion force and ... | 02/04/2003 |
| 5849667 | Superconductor and method of producing same A high critical temperature and high critical current density superconductor is disclosed which contains a metal oxide expressed by the following formula (I): (R11-x, Bax)Ba2 Cu3 Od (I) wh... | 12/15/1998 |
| 5341059 | Superconducting bearing unit and operating method thereof A superconducting bearing unit compring a permanent magnet mounted to a rotating shaft and a superconducting body mounted on the inner periphery of a housing surrounding the shaft, the superconducting member being adapted to be cooled with the rotating sh... | 08/23/1994 |
| 5174214 | Radial tire for levitation-type vehicle In a tire for a levitation-type vehicle for supporting a load which varies depending upon a change in speed of the levitation-type vehicle at landing and during subsequent traveling thereof, a configuration of a crown and rigidity of the crown are set so ... | 12/29/1992 |
