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 |
| 8326518 | Knocking detecting apparatus for internal combustion engine A knocking detecting apparatus for an internal combustion engine, which can more accurately perform the knocking determination based on frequency components of the output signal of the knock sensor, is provided. A frequency spectrum analysis of the knock sensor outp... | 12/04/2012 |
| 7438665 | Control system for internal combustion engine A control system for an internal combustion engine having a plurality of cylinders and a switching mechanism for switching between an all-cylinder operation in which all of the plurality of cylinders are operated and a partial-cylinder operation in which at least on... | 10/21/2008 |
| 7169080 | Control system for internal combustion engine A control system for an internal combustion engine having a plurality of cylinders and a switching mechanism for switching between an all-cylinder operation in which all of the plurality of cylinders are operated and a partial-cylinder operation in which at least on... | 01/30/2007 |
| 6947828 | Knock control system for internal combustion engine A knock control system for an internal combustion engine having a plurality of cylinders. Operation of the engine is switchable between a partial-cylinder operation for operating some of the cylinders and an all-cylinder operation for operating all of the cylinders.... | 09/20/2005 |
| 6854449 | Control apparatus for internal combustion engine A control apparatus for an internal combustion engine having a plurality of cylinders and a cylinder halting mechanism. The cylinder halting mechanism switches between an all-cylinder operation in which all of the plurality of cylinders are operated and a partial-cy... | 02/15/2005 |
| 6827062 | Ignition timing control apparatus for internal combustion engine An ignition timing control apparatus for an internal combustion engine having a plurality of cylinders, wherein operation of the engine is switchable between a partial-cylinder operation, which operates some of the cylinders, and an all-cylinder operation, which ope... | 12/07/2004 |
| 6499470 | Control system for internal combustion engine A control system for an internal combustion engine having a plurality of cylinders and a cylinder halting mechanism for halting operation of at least one of the plurality of cylinders. The cylinder halting mechanism is controlled to operate all of the plu... | 12/31/2002 |
| 5704315 | Valve operating system in SOHC-type engine In an engine including a variable timing/lift mechanism for an intake valve, journal portions of a valve-operating cam shaft are supported on cam bearing portions integrally provided in a cylinder head, and an intake rocker shaft is fixed by bolts to rock... | 01/06/1998 |
| 5493227 | Misfire-detecting system for internal combustion engines A misfire-detecting system for an internal combustion engine detects occurrence of a misfire in the engine, based on voltage between both ends of a spark plug assumed when sparking discharge takes place at the spark plug. A diode is arranged in an ignitio... | 02/20/1996 |
| 5415148 | Misfire-detecting system for internal combustion engines A misfire-determining system for an internal combustion engine detects sparking voltage generated when ignition is sequentially performed for each of cylinders. Adjacent durations of sparking voltage detected for respective cylinders are separately compar... | 05/16/1995 |
| 5365905 | Misfire-detecting system for internal combustion engines A misfire-detecting system for an internal combustion engine in which a value of sparking voltage is detected, which is generated across a spare plug when high voltage is generated by an ignition device in response to generation of an ignition command sig... | 11/22/1994 |
