Growing community of inventors

Houston, TX, United States of America

Howard C Clark

Average Co-Inventor Count = 6.00

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 = 416

Howard C Clark ↔ Robert L Waters (2 patents)Howard C Clark ↔ Philip H Walters (2 patents)Howard C Clark ↔ George F Roberts (2 patents)Howard C Clark ↔ Otis V Stelly, Ii (2 patents)Howard C Clark ↔ Don D Fitzgerald (2 patents)Howard C Clark ↔ Ii Stelly Otis V (1 patent)Howard C Clark ↔ George F Roberts (1 patent)Howard C Clark ↔ Donald D Fitzgerald (1 patent)Howard C ClarkHoward C Clark (2 patents)Robert L WatersRobert L Waters (7 patents)Philip H WaltersPhilip H Walters (4 patents)George F RobertsGeorge F Roberts (4 patents)Otis V Stelly, IiOtis V Stelly, Ii (2 patents)Don D FitzgeraldDon D Fitzgerald (2 patents)Ii Stelly Otis VIi Stelly Otis V (1 patent)George F RobertsGeorge F Roberts (1 patent)Donald D FitzgeraldDonald D Fitzgerald (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Magrange, Inc (2 from 2 patents)

2. Robert L. Waters (0 patent)

3. George F. Roberts (0 patent)

4. Howard C. Clark (0 patent)

5. Donald D. Fitzgerald (0 patent)

6. Otis V., Ii Stelly (0 patent)

7. Philip H. Walters (0 patent)


2 patents:

1. 5230387 - Downhole combination tool

2. 5064006 - Downhole combination tool

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idiyas.com
as of
12/17/2025
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