For the Inventor, By the Inventor

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Cleveland, OH, United States of America

Park-ohio Industries

USPTO Granted Patents = 51

Trademarks = 9

Forward Citations = 535

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38 inventors (with patents filed for the assignee):

John C Lewis (7 out of 7 patents)

Norbert R Balzer (6 out of 14 patents)

Paul L Day (6 out of 7 patents)

4. George M Mucha (4 out of 15 patents)

5. John F Cachat (3 out of 3 patents)

6. David R Soworowski (3 out of 3 patents)

7. James J Pusateri (3 out of 3 patents)

8. George D Pfaffmann (2 out of 34 patents)

9. Graham R Adams (2 out of 5 patents)

10. Terry M Philips (2 out of 4 patents)

11. Felix J Tarorick (2 out of 2 patents)

12. Edward F Crawford (2 out of 2 patents)

13. Shashi B Dewan (2 out of 6 patents)

14. James R Masie (2 out of 2 patents)

15. Donald E Novorsky (2 out of 2 patents)

Core Competencies:

Induction Heating

Metal Treatment

Quench Hardening

Power Factor Control

Transformer Cooling

Stackable Furniture

Workpiece Feeding Mechanism

Heating Apparatus

Solid State Inverter

Forging Techniques

Cylindrical Surface Heating

Annealing Processes

51 patents: Sort by Forward Citations

1. 6238787 - Method of attaching a strip to a rubber molded part (2001-05-29),

2. 5564345 - Stackable table, table assembly, and tray and table combination (1996-10-15),

3. D359406 - Table with removable tray and/or insert (1995-06-20),

4. 4625090 - Apparatus for inductively heat treating workpiece bore walls (1986-11-25),

5. 4619717 - Heating magnetic metal workpieces (1986-10-28),

6. 4577081 - Heating nonmagnetic metal workpieces (1986-03-18),

7. 4538041 - Rotating induction heating apparatus (1985-08-27),

8. 4537102 - Method of shearing metal billets (1985-08-27),

9. 4531987 - Method for inductively heat treating workpiece bore walls (1985-07-30),

10. 4531036 - Apparatus and method for inductively hardening small bores (1985-07-23),

11. 4511956 - Power inverter using separate starting inverter (1985-04-16),

12. 4507722 - Method and apparatus for controlling the power factor of a resonant (1985-03-26),

13. 4501942 - Method and apparatus for uniform induction heating of an elongated (1985-02-26),

14. 4482879 - Transformer core cooling arrangement (1984-11-13),

15. 4482793 - Apparatus for simultaneously heating a plurality of elongated workpieces (1984-11-13),

Park-Ohio Industries provides integrated supply chain management services and diverse manufacturing capabilities to customers in the automotive, aerospace, and other industries worldwide. With a network of over 120 facilities across the globe, Park-Ohio offers a range of services including warehousing, distribution, logistics, engineering, and assembly. Their commitment to innovation, quality, and customer satisfaction drives their success in delivering cost-effective solutions and exceptional value.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

51 Patents

#45 in Cleveland, OH

#285 in Ohio

#6,660 in US

#13,373 in the World

Cleveland, OH, United States of America

Park-ohio Industries

Forward Citations = 535

38 inventors:

John C Lewis (7 out of 7 patents)

Norbert R Balzer (6 out of 14 patents)

Paul L Day (6 out of 7 patents)

4. George M Mucha (4 out of 15 patents)

5. John F Cachat (3 out of 3 patents)

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