Growing community of inventors

Saint Paul, MN, United States of America

John W Longfellow

Average Co-Inventor Count = 6.00

ph-index = 1

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 = 311

John W Longfellow ↔ Jeffrey M Setterholm (1 patent)John W Longfellow ↔ Stephen Boggs (1 patent)John W Longfellow ↔ Theodore M Lachinski (1 patent)John W Longfellow ↔ Paul M Blais (1 patent)John W Longfellow ↔ Louis S Ptacek (1 patent)John W LongfellowJohn W Longfellow (1 patent)Jeffrey M SetterholmJeffrey M Setterholm (10 patents)Stephen BoggsStephen Boggs (2 patents)Theodore M LachinskiTheodore M Lachinski (2 patents)Paul M BlaisPaul M Blais (1 patent)Louis S PtacekLouis S Ptacek (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Geospan Corporation (1 from 3 patents)


1 patent:

1. 5633946 - Method and apparatus for collecting and processing visual and spatial

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12/19/2025
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