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Pittsburgh, PA, United States of America

Nicholas Ritchie

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 = 27

Nicholas RitchieFrederick H Schamber (1 patent)Nicholas RitchieCornelis G Van Beek (1 patent)Nicholas RitchieNicholas Ritchie (1 patent)Frederick H SchamberFrederick H Schamber (8 patents)Cornelis G Van BeekCornelis G Van Beek (8 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Aspex Corporation (1 from 5 patents)


1 patent:

1. 6683316 - Apparatus for correlating an optical image and a SEM image and method of use thereof

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12/17/2025
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