John A. Keller

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Coatesville, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
System and method for providing variable sector-format operation to...
- Patent number 5,813,025
- Issue date Sep 22, 1998
- Unisys Corporation
- Philip A. Murphy
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Multi-event mechanism for queuing happened events for a large data...
- Patent number 5,010,482
- Issue date Apr 23, 1991
- Unisys Corp.
- John A. Keller
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Special purpose processor for off-loading many operating system fun...
- Patent number 4,796,178
- Issue date Jan 3, 1989
- Unisys Corporation
- Andrew T. Jennings
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Event allocation mechanism for a large data processing system
- Patent number 4,779,194
- Issue date Oct 18, 1988
- Unisys Corporation
- Andrew T. Jennings
- G06 - COMPUTING CALCULATING COUNTING