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Trademarks = 1

Forward Citations = 264

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8 inventors (with patents filed for the assignee):

Paul F Rieffle (3 out of 3 patents)

James M Royston (2 out of 5 patents)

Richard M Halen, Jr (2 out of 3 patents)

4. Charles E Felker (2 out of 2 patents)

5. John D Tricini (1 out of 3 patents)

6. Alfred D Ledonne (1 out of 1 patent)

7. George A Scheuering (1 out of 1 patent)

8. Robert B Walsh (1 out of 1 patent)

9 patents: Sort by Forward Citations

1. 5131688 - Pipe insulator and method for making same (1992-07-21),

2. 5069490 - Pipe coupling with spring off-set (1991-12-03),

3. 4610471 - Flange adapters (1986-09-09),

4. 4606565 - Pipe couplings (1986-08-19),

5. 4538841 - Insulated pipe couplings (1985-09-03),

6. 4316053 - Pipe couplings and coupling gaskets (1982-02-16),

7. 4127141 - Method and apparatus for stopping fluid escape from pipe mains (1978-11-28),

8. 4119335 - Pipe and tubing connectors (1978-10-10),

9. 4070046 - Pipe and tubing connecting sleeve (1978-01-24),

Coupling Systems, Incorporated is a leading provider of high-quality, innovative coupling solutions for various industrial applications. With over 20 years of experience, we offer a wide range of coupling products including flexible shaft couplings, gear couplings, and disc couplings. Our products are known for their durability, reliability, and precision engineering, making us a trusted partner for businesses worldwide.

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USPTO Data Jan 1 1976 - Dec 16 2025

9 Patents

#178 in Pittsburgh, PA

#1,154 in Pennsylvania

#31,616 in US

Pittsburgh, PA, United States of America

Coupling Systems, Incorporated