Growing community of inventors

Coraopolis, PA, United States of America

Frederick Alan Hoffstadt

Average Co-Inventor Count = 2.00

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 = 36

Frederick Alan Hoffstadt ↔ Lawrence J Guilbault (2 patents)Frederick Alan Hoffstadt ↔ Kenneth W Dixon (1 patent)Frederick Alan HoffstadtFrederick Alan Hoffstadt (3 patents)Lawrence J GuilbaultLawrence J Guilbault (17 patents)Kenneth W DixonKenneth W Dixon (12 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Calgon Corporation (3 from 312 patents)


3 patents:

1. 4272364 - Frother for coal flotation

2. 3943996 - Low fluid loss cementing compositions

3. 3931096 - Low fluid loss cementing compositions

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as of
12/31/2025
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