For the Inventor, By the Inventor

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Youngstown, OH, United States of America

Spirex Corporation

USPTO Granted Patents = 16

Trademarks = 2

Forward Citations = 254

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10 inventors (with patents filed for the assignee):

Paul N Colby (8 out of 8 patents)

Michael F Durina (6 out of 11 patents)

Timothy W Womer (5 out of 16 patents)

4. Shawn P Bodnar (3 out of 3 patents)

5. Bradley Paul Smith (2 out of 6 patents)

6. Joeo M Gatti (2 out of 2 patents)

7. Vue X Yang (2 out of 5 patents)

8. Paul T Colby (1 out of 1 patent)

9. Michael J Senediak (1 out of 1 patent)

10. Harry F White (1 out of 1 patent)

16 patents: Sort by Forward Citations

1. 6585001 - Flow through ring valve for plastic extruding systems (2003-07-01),

2. 6486432 - Method and laser cladding of plasticating barrels (2002-11-26),

3. 5931578 - Extruder and extrusion screw therefor (1999-08-03),

4. 5823668 - Extruder and extrusion screw therefor (1998-10-20),

5. 5816698 - Screw and plasticating apparatus and method (1998-10-06),

6. 5798077 - Screw for plasticating apparatus and method of use (1998-08-25),

7. 5439633 - Plastic extruder having a mixing valve with automatic shut-off (1995-08-08),

8. 5318357 - Extruder injection apparatus (1994-06-07),

9. 5188399 - Pipe coupling device and method (1993-02-23),

10. 5164207 - Plastic extruder with automatic shut-off valve (1992-11-17),

11. 5096302 - Plastic feeding device and method (1992-03-17),

12. 5071256 - Extruder injection apparatus and method (1991-12-10),

13. 5018917 - Apparatus for grooving the barrel of a plasticating machine (1991-05-28),

14. 4953279 - Method and apparatus for grooving the barrel of a plasticating machine (1990-09-04),

15. 4944906 - Methods of injection molding and extruding wet hygroscopic ionomers (1990-07-31),

Spirex Corporation, headquartered in Youngstown, Ohio, specializes in the design and manufacture of advanced fluid handling systems and components. The company focuses on providing innovative solutions for various industries, including aerospace, automotive, and industrial applications. With a commitment to quality and precision, Spirex develops technologies that enhance performance and reliability in fluid management. Their expertise encompasses a range of engineering disciplines, ensuring that they meet the evolving needs of their diverse clientele.

Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

16 Patents

#7 in Youngstown, OH

#845 in Ohio

#19,898 in US

#37,766 in the World

Youngstown, OH, United States of America

Spirex Corporation

Forward Citations = 254

10 inventors:

Paul N Colby (8 out of 8 patents)

Michael F Durina (6 out of 11 patents)

Timothy W Womer (5 out of 16 patents)

4. Shawn P Bodnar (3 out of 3 patents)

5. Bradley Paul Smith (2 out of 6 patents)

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