Trademarks = 4

Forward Citations = 106

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9 inventors (with patents filed for the assignee):

Danny E Crawford (2 out of 3 patents)

Teddy N Trainer (2 out of 2 patents)

Dennis P Rolph (2 out of 3 patents)

4. Doug Rogge (1 out of 1 patent)

5. Douglas A Rogge (1 out of 1 patent)

6. Dan E Crawford (1 out of 1 patent)

7. Scott A Girkin (1 out of 1 patent)

8. Thomas A Bartz (1 out of 1 patent)

9. Trevor J Crawford (1 out of 1 patent)

7 patents: Sort by Forward Citations

1. 5743061 - Wall anchor (1998-04-28),

2. 5711043 - Set tool and cap (1998-01-27),

3. 5221167 - Security head anchor (1993-06-22),

4. 5215418 - Single direction toggle anchor (1993-06-01),

5. 5038435 - Anchor set tool (1991-08-13),

6. 4954025 - Anchor set tool (1990-09-04),

7. 4917552 - Pin drive anchor with locking sleeve (1990-04-17),

Company Overview

Diversified Fastening Systems, Inc. (DFS) is a leading provider of fastening solutions for a wide range of industries. With over 20 years of experience, DFS offers a diverse portfolio of products including screws, bolts, nuts, and washers. Their commitment to quality, service, and innovation has made them a trusted partner for customers worldwide.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

7 Patents

#2 in Charles City, IA

#246 in Iowa

#39,907 in US

Charles City, IA, United States of America

Diversified Fastening Systems, Inc.

Forward Citations = 106

9 inventors:

Danny E Crawford (2 out of 3 patents)

Teddy N Trainer (2 out of 2 patents)

Dennis P Rolph (2 out of 3 patents)

4. Doug Rogge (1 out of 1 patent)

5. Douglas A Rogge (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Diversified Fastening Systems, Inc.. Retrieved from https://idiyas.com/company/diversified-fastening-systems

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]