For the Inventor, By the Inventor

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Cleveland, OH, United States of America

Plastic Safety Systems, Inc.

USPTO Granted Patents = 28

CIPO Patents = 3

EPO Patents = 4

Trademarks = 19

Forward Citations = 208

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6 inventors (with patents filed for the assignee):

Charles M Mettler (20 out of 20 patents)

Gregory H Brown (20 out of 20 patents)

David Allen Cowan (5 out of 22 patents)

4. David E Cowan (4 out of 4 patents)

5. Charles D Bailey (1 out of 1 patent)

6. John A Farley (1 out of 1 patent)

28 patents: Sort by Forward Citations

1. 12270166 - Link for foldable portable roadway warning device (2025-04-08),

2. 11535994 - Vehicle-mountable cargo carrier for portable rumble strips (2022-12-27),

3. 10662042 - Portable rumble strip retrieval system (2020-05-26),

4. 10661697 - Vehicle-mountable cargo carrier for portable rumble strips (2020-05-26),

5. 9534394 - Portable modular pedestrian ramp (2017-01-03),

6. 9297127 - Barricade assembly with foldable legs (2016-03-29),

7. 8302937 - Pedestrian barricade assembly (2012-11-06),

8. 8282309 - Inertial barrier (2012-10-09),

9. D665689 - Barricade panel (2012-08-21),

10. 7736087 - Portable highway warning device (2010-06-15),

11. 7681857 - Portable sign and barricade assemblies and plastic molded uprights and light and flag mounts therefor (2010-03-23),

12. 7536973 - Plastic blow molded board-like members (2009-05-26),

13. 7523715 - Portable sign and barricade assemblies and plastic molded uprights and light and flag mounts therefor (2009-04-28),

14. D542685 - Inertial barrier container (2007-05-15),

15. 7111815 - Base support for post or other upright (2006-09-26),

Plastic Safety Systems, Inc. is a leading manufacturer of safety products made from high-quality plastic materials. With over 20 years of experience, we design and produce innovative safety solutions for various industries, including construction, transportation, and manufacturing. Our extensive product range includes traffic control devices, road and parking safety equipment, barricades, safety cones, bollards, and more. We are committed to providing durable and reliable safety products that meet industry standards and regulations. Visit our website for more information and to explore our product catalog.

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

Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

28 Patents

#72 in Cleveland, OH

#498 in Ohio

#11,614 in US

#22,582 in the World

Cleveland, OH, United States of America

Plastic Safety Systems, Inc.

Forward Citations = 208

6 inventors:

Charles M Mettler (20 out of 20 patents)

Gregory H Brown (20 out of 20 patents)

David Allen Cowan (5 out of 22 patents)

4. David E Cowan (4 out of 4 patents)

5. Charles D Bailey (1 out of 1 patent)

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