Growing community of inventors

Cherry Valley, IL, United States of America

Bob Schaefer

Average Co-Inventor Count = 3.00

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 = 3

Bob Schaefer ↔ Roland L Hagemeyer (1 patent)Bob Schaefer ↔ Eric S Larsen (1 patent)Bob SchaeferBob Schaefer (1 patent)Roland L HagemeyerRoland L Hagemeyer (7 patents)Eric S LarsenEric S Larsen (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. The Louis Berkman Company (1 from 90 patents)


1 patent:

1. 8505838 - Electric interlock for spreader

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as of
12/15/2025
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