Growing community of inventors

Ada, MI, United States of America

Charles J Steffens

Average Co-Inventor Count = 2.00

ph-index = 12

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 = 394

Charles J SteffensScott P Crossman (5 patents)Charles J SteffensMark J Heintskill (3 patents)Charles J SteffensDouglas C Steffens (3 patents)Charles J SteffensRoger L Erickson (2 patents)Charles J SteffensJames P Sheeran (2 patents)Charles J SteffensLynne F Hunter (1 patent)Charles J SteffensCraig Charles Mulder (1 patent)Charles J SteffensJames E Rieth (1 patent)Charles J SteffensJohn Kooiker (1 patent)Charles J SteffensScott D Steffens (1 patent)Charles J SteffensCraig C Mulder (1 patent)Charles J SteffensCharles J Steffens (18 patents)Scott P CrossmanScott P Crossman (40 patents)Mark J HeintskillMark J Heintskill (3 patents)Douglas C SteffensDouglas C Steffens (3 patents)Roger L EricksonRoger L Erickson (2 patents)James P SheeranJames P Sheeran (2 patents)Lynne F HunterLynne F Hunter (65 patents)Craig Charles MulderCraig Charles Mulder (8 patents)James E RiethJames E Rieth (5 patents)John KooikerJohn Kooiker (3 patents)Scott D SteffensScott D Steffens (1 patent)Craig C MulderCraig C Mulder (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Steffens Enterprises, Inc. (15 from 21 patents)

2. Other (2 from 832,891 patents)

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

4. Craig C. Mulder (0 patent)

5. Charles J. Steffens (0 patent)


18 patents:

1. 9669689 - Folding cargo bay cover for pickup truck

2. 8205844 - Connector assembly

3. 8205928 - Folding cargo bay cover for pickup truck

4. D645630 - Computer cart

5. D637782 - Computer cart

6. 7735881 - Folding cargo bay cover for pickup truck

7. D612561 - Computer cart

8. 7334807 - Vehicle step tube

9. 7195299 - Cargo compartment organizer

10. 7036861 - Cargo compartment organizer

11. 6565141 - Folding cargo bay cover for pickup truck

12. 6527330 - Folding cargo bay cover for pickup truck

13. 6520559 - Folding cargo bay cover for pickup truck

14. 6454337 - Folding cargo bay cover for pickup truck

15. 6422635 - Folding cargo bay cover for pickup truck

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as of
12/31/2025
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