Growing community of inventors

Milwaukee, WI, United States of America

John Christianson

Average Co-Inventor Count = 1.64

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 = 45

John ChristiansonGreg W Hartlmeier (1 patent)John ChristiansonChuck Lob (1 patent)John ChristiansonDouglas Drake (1 patent)John ChristiansonJohn Christianson (3 patents)Greg W HartlmeierGreg W Hartlmeier (5 patents)Chuck LobChuck Lob (1 patent)Douglas DrakeDouglas Drake (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Harken, Incorporated (2 from 41 patents)

2. Tarrenn Corporation (1 from 1 patent)


3 patents:

1. 6722303 - Fairlead and cam assembly

2. 6520103 - Boom vang for sailing vessel

3. 5067709 - Unassisted lower torso strengthening and stretching device

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as of
12/18/2025
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