Growing community of inventors

Blacksburg, VA, United States of America

Joseph Roark

Average Co-Inventor Count = 3.00

ph-index = 3

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

Joseph RoarkJeffrey Alan Warden (3 patents)Joseph RoarkDonald Barry Huehn (2 patents)Joseph RoarkBarry Huehn (1 patent)Joseph RoarkJoseph Roark (3 patents)Jeffrey Alan WardenJeffrey Alan Warden (18 patents)Donald Barry HuehnDonald Barry Huehn (9 patents)Barry HuehnBarry Huehn (6 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Tetra Holding (us), Inc. (3 from 27 patents)

2. Tetra Holding, Inc. (0 patent)


3 patents:

1. 7658842 - Filter cartridge assembly with water collection

2. 7638044 - Aquarium filter housing with rounded bottom

3. 7553411 - Filter cartridge

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as of
12/28/2025
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