Growing community of inventors

Newark, DE, United States of America

Clarence P Donovan

Average Co-Inventor Count = 1.33

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 = 43

Clarence P DonovanJeffrey Brian Harwanko (1 patent)Clarence P DonovanClarence P Donovan (2 patents)Jeffrey Brian HarwankoJeffrey Brian Harwanko (85 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Speakman Company (2 from 48 patents)


2 patents:

1. D740441 - Eye and face wash system

2. 6520431 - Emergency eyewash apparatus

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as of
12/18/2025
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