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Norristown, PA, United States of America

Stephen Keller

Average Co-Inventor Count = 3.00

ph-index = 1

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 12

Stephen KellerDuane Boone (1 patent)Stephen KellerKeith Lewish (1 patent)Stephen KellerStephen Keller (1 patent)Duane BooneDuane Boone (2 patents)Keith LewishKeith Lewish (2 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Platinum Technology Ip, Inc. (1 from 14 patents)


1 patent:

1. 6266661 - Method and apparatus for maintaining multi-instance database management systems with hierarchical inheritance and cross-hierarchy overrides

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12/24/2025
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