% Expired Patents = 12.5

Trademarks = 1

Forward Citations = 77

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11 inventors (with patents filed for the assignee):

Roelof H Devries (4 out of 6 patents)

Emanuel A Hendriks (3 out of 3 patents)

Mathias M Hendriks (3 out of 4 patents)

4. Johannes G Hendriks (3 out of 3 patents)

5. Wilhelmus J Hendriks (3 out of 4 patents)

6. Frank R Pohlman, Jr (2 out of 4 patents)

7. Gerald L Douglas (2 out of 2 patents)

8. Thomas E Noyes, Ii (2 out of 2 patents)

9. David Sean Johnsen (2 out of 8 patents)

10. Hubert Fixen (1 out of 2 patents)

11. Glenn D Gerber (1 out of 1 patent)

8 patents: Sort by Forward Citations

1. 7096967 - Robotic sod stacker with software control (2006-08-29),

2. 7070004 - Robotic sod stacker (2006-07-04),

3. 7066277 - Robotic sod stacker (2006-06-27),

4. 7021584 - Automatic control of sod roll flaps (2006-04-04),

5. 6571883 - Sod harvester (2003-06-03),

6. 6223830 - Method of harvesting sod (2001-05-01),

7. 6056064 - Method of harvesting sod (2000-05-02),

8. 5775436 - Sod harvester with pivotable roll-forming unit (1998-07-07),

Company Overview

Steiner Turf Equipment, Inc. is a leading manufacturer of commercial-grade turf maintenance equipment. With over 40 years of experience, Steiner specializes in producing high-quality, durable machines for landscaping professionals and homeowners alike. Their product line includes versatile tractors, mowers, and attachments designed to tackle a variety of outdoor tasks with precision and efficiency. Steiner is dedicated to providing innovative solutions for maintaining beautiful lawns and landscapes.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

8 Patents

#39 in Providence, RI

#161 in Rhode Island

#35,924 in US

Providence, RI, United States of America

Steiner Turf Equipment, Inc.

Forward Citations = 77

11 inventors:

Roelof H Devries (4 out of 6 patents)

Emanuel A Hendriks (3 out of 3 patents)

Mathias M Hendriks (3 out of 4 patents)

4. Johannes G Hendriks (3 out of 3 patents)

5. Wilhelmus J Hendriks (3 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Steiner Turf Equipment, Inc.. Retrieved from https://idiyas.com/company/steiner-turf-equipment

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]