Growing community of inventors

Plano, TX, United States of America

Sonia Hellen

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 = 58

Sonia HellenMarcus G Pestl (1 patent)Sonia HellenSonia Hellen (1 patent)Marcus G PestlMarcus G Pestl (15 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Other (1 from 832,966 patents)


1 patent:

1. 8371740 - Continuous fragrance and illumination device with replaceable fragrance refills

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as of
1/19/2026
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