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Franksville, WI, United States of America

John W Chapman

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 = 43

John W ChapmanChristopher F Kreuser (4 patents)John W ChapmanYoung Jue Kang (1 patent)John W ChapmanJohn W Chapman (5 patents)Christopher F KreuserChristopher F Kreuser (5 patents)Young Jue KangYoung Jue Kang (10 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Johnson Worldwide Associates, Inc. (3 from 34 patents)

2. Zebco Division of Brunswick Corp (1 from 31 patents)

3. Fishing Spirit, Inc. (1 from 1 patent)


5 patents:

1. D433092 - Bait cast fishing reel

2. D423074 - Bait cast fishing reel

3. 6032894 - Cartridge spool system for bait cast fishing reel

4. 5988548 - Easy hold fishing reel body

5. 5738292 - Selective continuous anti-reverse mechanism for a fishing reel

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as of
12/12/2025
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