For the Inventor, By the Inventor

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Caledonia, MI, United States of America

Steffens Enterprises, Inc.

USPTO Granted Patents = 21

% Expired Patents = 9.5

Trademarks = 5

Forward Citations = 514

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11 inventors (with patents filed for the assignee):

Charles J Steffens (15 out of 18 patents)

Scott P Crossman (6 out of 40 patents)

Craig Charles Mulder (4 out of 8 patents)

4. John Kooiker (3 out of 3 patents)

5. Douglas C Steffens (2 out of 3 patents)

6. Mark J Heintskill (2 out of 3 patents)

7. Roger L Erickson (2 out of 2 patents)

8. James P Sheeran (2 out of 2 patents)

9. Lynne F Hunter (1 out of 68 patents)

10. John Michael Arend (1 out of 6 patents)

11. Chuck J Steffens (1 out of 1 patent)

21 patents: Sort by Forward Citations

1. 9669689 - Folding cargo bay cover for pickup truck (2017-06-06),

2. 8205844 - Connector assembly (2012-06-26),

3. D645630 - Computer cart (2011-09-20),

4. D637782 - Computer cart (2011-05-10),

5. 7735881 - Folding cargo bay cover for pickup truck (2010-06-15),

6. D612561 - Computer cart (2010-03-23),

7. 7380806 - Vehicle step tube (2008-06-03),

8. 7334807 - Vehicle step tube (2008-02-26),

9. 7195299 - Cargo compartment organizer (2007-03-27),

10. 7168721 - Vehicle step tube (2007-01-30),

11. 7052071 - Cover and latch for vehicle cargo bed with tailgate (2006-05-30),

12. 7036861 - Cargo compartment organizer (2006-05-02),

13. 6565141 - Folding cargo bay cover for pickup truck (2003-05-20),

14. 6527330 - Folding cargo bay cover for pickup truck (2003-03-04),

15. 6520559 - Folding cargo bay cover for pickup truck (2003-02-18),

Steffens Enterprises, Inc. is a leading provider of innovative solutions in the technology industry. With over 20 years of experience, we specialize in developing and delivering cutting-edge software products and services to meet the evolving needs of our clients. Our team of dedicated professionals is committed to delivering exceptional quality and customer satisfaction. Visit our website to learn more about our comprehensive range of technology solutions and how we can help your business thrive.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Sep 22 2026

21 Patents

#3 in Caledonia, MI

#570 in Michigan

#15,662 in US

#29,874 in the World

Caledonia, MI, United States of America

Steffens Enterprises, Inc.

Forward Citations = 514

11 inventors:

Charles J Steffens (15 out of 18 patents)

Scott P Crossman (6 out of 40 patents)

Craig Charles Mulder (4 out of 8 patents)

4. John Kooiker (3 out of 3 patents)

5. Douglas C Steffens (2 out of 3 patents)

Please report any incorrect information to [email protected]

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