Growing community of inventors

Montoursville, PA, United States of America

Norman O Sonntag

Average Co-Inventor Count = 1.33

ph-index = 2

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 = 13

Norman O SonntagJohn D Freilich (1 patent)Norman O SonntagNorman O Sonntag (2 patents)John D FreilichJohn D Freilich (3 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Glyco Chemicals, Inc. (2 from 12 patents)


2 patents:

1. 4073924 - Hydantoin derivatives and broad spectrum bactericidal/fungicidal

2. 4073926 - Mono-quaternary ammonium salts of hydantoin and compositions thereof

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as of
12/19/2025
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