Growing community of inventors

Chicago, IL, United States of America

John David Hartman

Average Co-Inventor Count = 2.86

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 = 27

John David HartmanDavid Chesley (3 patents)John David HartmanJeffrey Cogan Nelson (3 patents)John David HartmanDaniel A Peterson (3 patents)John David HartmanKim Thuy Nguyen (3 patents)John David HartmanGraham Robert Byrne Henshaw (3 patents)John David HartmanKim Thuy Nguyen (1 patent)John David HartmanJohn David Hartman (6 patents)David ChesleyDavid Chesley (18 patents)Jeffrey Cogan NelsonJeffrey Cogan Nelson (9 patents)Daniel A PetersonDaniel A Peterson (8 patents)Kim Thuy NguyenKim Thuy Nguyen (3 patents)Graham Robert Byrne HenshawGraham Robert Byrne Henshaw (3 patents)Kim Thuy NguyenKim Thuy Nguyen (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Wellmark International (3 from 19 patents)

2. Liftseat Corporation (3 from 8 patents)


6 patents:

1. D725485 - Device for applying a formulation to skin

2. D725486 - Device for applying a formulation to skin

3. D702563 - Device for applying a formulation to skin

4. 8438675 - Devices and methods for body elevation

5. 8056158 - Devices and methods for body elevation

6. D582529 - Toilet assembly

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as of
12/6/2025
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