Growing community of inventors

New York, NY, United States of America

David L Krohn

Average Co-Inventor Count = 2.00

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 = 37

David L Krohn ↔ Samuel H Ronel (1 patent)David L KrohnDavid L Krohn (1 patent)Samuel H RonelSamuel H Ronel (6 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. National Patent Development Corporation (1 from 51 patents)


1 patent:

1. 4003991 - Ophthalmic formulation

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as of
12/17/2025
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