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River Forest, IL, United States of America

Roy A Fricke

Average Co-Inventor Count = 1.00

ph-index = 4

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 = 111

Roy A FrickeRoy A Fricke (6 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Other (5 from 832,812 patents)

2. Wells Manufacturing (1 from 10 patents)


6 patents:

1. 4236902 - Modular air purifying device

2. 4202141 - Two way spark plug cleaner and method

3. 4165586 - Spark plug cleaner and method

4. 4121916 - Portable air purge

5. 4062155 - Spark plug cleaner

6. 4028851 - Sparkplug cleaner

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as of
12/19/2025
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