Growing community of inventors

Grand Rapids, MI, United States of America

Mark J Heintskill

Average Co-Inventor Count = 3.00

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 = 38

Mark J HeintskillCharles J Steffens (3 patents)Mark J HeintskillDouglas C Steffens (3 patents)Mark J HeintskillMark J Heintskill (3 patents)Charles J SteffensCharles J Steffens (18 patents)Douglas C SteffensDouglas C Steffens (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Steffens Enterprises, Inc. (2 from 21 patents)

2. Steffans Enterprises, Inc. (1 from 1 patent)


3 patents:

1. 9669689 - Folding cargo bay cover for pickup truck

2. 8205928 - Folding cargo bay cover for pickup truck

3. 7735881 - Folding cargo bay cover for pickup truck

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as of
12/10/2025
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