Growing community of inventors

Belleville, IL, United States of America

John Ackermann

Average Co-Inventor Count = 1.67

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 = 33

John AckermannKeith Allen Spalding (1 patent)John AckermannFred Levko (1 patent)John AckermannDonald E Johnston (1 patent)John AckermannArlie Ehlman (1 patent)John AckermannJohn Ackermann (2 patents)Keith Allen SpaldingKeith Allen Spalding (13 patents)Fred LevkoFred Levko (5 patents)Donald E JohnstonDonald E Johnston (2 patents)Arlie EhlmanArlie Ehlman (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Cooper Industries, Inc. (1 from 901 patents)

2. Mcgraw-edison Company (1 from 279 patents)


2 patents:

1. 4992770 - Fuse with improved spring timer

2. 4313099 - Current limiting fuse having aluminum sulfate arc-quenching filler

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as of
12/14/2025
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