Growing community of inventors

Sayville, NY, United States of America

John Dudley Dreher

Average Co-Inventor Count = 6.06

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 = 6

John Dudley DreherIsaac David Cohen (5 patents)John Dudley DreherYelena Mikhaylova (4 patents)John Dudley DreherMilan Franz Sojka (3 patents)John Dudley DreherChristina G Fthenakis (3 patents)John Dudley DreherPhillip Cummins (3 patents)John Dudley DreherDavid Walter Culhane (3 patents)John Dudley DreherJennifer L Sobel (2 patents)John Dudley DreherDaniela Bratescu (1 patent)John Dudley DreherMonica Apostol (1 patent)John Dudley DreherJennifer L Oko (1 patent)John Dudley DreherMaryanne Ivanjesku (1 patent)John Dudley DreherSharon Mesfen (1 patent)John Dudley DreherGeorgeJ Stepniewski (0 patent)John Dudley DreherMikhaylova Yelena (0 patent)John Dudley DreherJohn Dudley Dreher (5 patents)Isaac David CohenIsaac David Cohen (19 patents)Yelena MikhaylovaYelena Mikhaylova (4 patents)Milan Franz SojkaMilan Franz Sojka (12 patents)Christina G FthenakisChristina G Fthenakis (8 patents)Phillip CumminsPhillip Cummins (7 patents)David Walter CulhaneDavid Walter Culhane (3 patents)Jennifer L SobelJennifer L Sobel (2 patents)Daniela BratescuDaniela Bratescu (7 patents)Monica ApostolMonica Apostol (4 patents)Jennifer L OkoJennifer L Oko (4 patents)Maryanne IvanjeskuMaryanne Ivanjesku (1 patent)Sharon MesfenSharon Mesfen (1 patent)GeorgeJ StepniewskiGeorgeJ Stepniewski (0 patent)Mikhaylova YelenaMikhaylova Yelena (0 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Elc Management LLC (4 from 452 patents)

2. Color Access, Inc. (1 from 78 patents)


5 patents:

1. 9468589 - Composite particles, compositions and methods

2. 9283154 - Method and compositions for improving appearance of skin

3. 9278056 - Method and compositions for improving appearance of skin

4. 7794740 - Transparent concealing cosmetic compositions

5. 7338538 - Compositions and methods for darkening keratinous fibers

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as of
12/17/2025
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