Growing community of inventors

Litchfield, MN, United States of America

Harlan F Johnson

Average Co-Inventor Count = 1.33

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 = 26

Harlan F JohnsonMichael E Winiasz (1 patent)Harlan F JohnsonJeffrey F Bull (1 patent)Harlan F JohnsonJames F Karg (1 patent)Harlan F JohnsonHarlan F Johnson (3 patents)Michael E WiniaszMichael E Winiasz (23 patents)Jeffrey F BullJeffrey F Bull (6 patents)James F KargJames F Karg (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Other (2 from 832,912 patents)

2. H. F. Johnson, Inc. (1 from 1 patent)


3 patents:

1. 5056806 - Trailer with axle

2. 4535674 - Apparatus for control of moving strands from rotating strand supply

3. 4529085 - Self-cleaning and anti-bridging grain receiving and transporting device

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as of
1/8/2026
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