For the Inventor, By the Inventor

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Maumee, OH, United States of America

Surface Combustion, Inc.

USPTO Granted Patents = 28

Trademarks = 35

Forward Citations = 255

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30 inventors (with patents filed for the assignee):

Max Hoetzl (10 out of 12 patents)

Ralph Paul Poor (8 out of 9 patents)

Garry W Barbee (6 out of 6 patents)

4. Thomas M Lingle (6 out of 7 patents)

5. Stephen Harry Verhoff (6 out of 6 patents)

6. Thomas J Schultz (5 out of 15 patents)

7. James Edward Brug (4 out of 5 patents)

8. Michael J Huber (4 out of 4 patents)

9. William J Bernard (2 out of 2 patents)

10. Gary W Barbee (2 out of 2 patents)

11. Jay K Shah (2 out of 2 patents)

12. Garrol Tackett (2 out of 2 patents)

13. Petros A Kotidis (2 out of 6 patents)

14. Jaime A Woodroffe (2 out of 17 patents)

15. Peter S Rostler (2 out of 6 patents)

Core Competencies:

Torque-Limiting Drive

Surface Treatment

Vacuum Carburizing

Heat Treat Furnace

Gas Generator

Industrial Furnace

Convective Heat Transfer

Gas Analysis

Thermal Cleaning

Batch Pyrolysis

Ion Carburizing

Internal Heat Exchange

28 patents: Sort by Forward Citations

1. 10604350 - System for controlling torque-limiting drive charge car (2020-03-31),

2. 8293167 - Surface treatment of metallic articles in an atmospheric furnace (2012-10-23),

3. 7267793 - Furnace for vacuum carburizing with unsaturated aromatic hydrocarbons (2007-09-11),

4. 7204952 - Vacuum furnace for carburizing with hydrocarbons (2007-04-17),

5. 7033446 - Vacuum carburizing with unsaturated aromatic hydrocarbons (2006-04-25),

6. 6991687 - Vacuum carburizing with napthene hydrocarbons (2006-01-31),

7. 6283749 - Inside/out, industrial vacuum furnace (2001-09-04),

8. 5639418 - Strip floater furnace with closed loop recirculation (1997-06-17),

9. 5554230 - Low dew point gas generator cooling system (1996-09-10),

10. 5550858 - Heat treat furnace with multi-bar high convective gas quench (1996-08-27),

11. 5478985 - Heat treat furnace with multi-bar high convective gas quench (1995-12-26),

12. 5402233 - Furnace control apparatus using polarizing interferometer (1995-03-28),

13. 5364476 - Industrial variable carbon potential gas generator (1994-11-15),

14. 5320329 - Pressure pad for stably floating thin strip (1994-06-14),

15. 5286313 - Process control system using polarizing interferometer (1994-02-15),

Surface Combustion, Inc. is a leading provider of thermal processing solutions, specializing in the design and manufacture of industrial furnaces and heat treating equipment. The company focuses on advanced technologies for various applications, including metal processing and surface treatment. With a commitment to innovation, Surface Combustion serves a diverse range of industries, enhancing operational efficiency and product quality through its state-of-the-art thermal systems. Headquartered in Maumee, Ohio, the company is recognized for its expertise and customer-centric approach.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

Surface Combustion, Inc.

28 Patents

#8 in Maumee, OH

#530 in Ohio

#12,009 in US

#23,262 in the World

Maumee, OH, United States of America

Surface Combustion, Inc.

Forward Citations = 255

30 inventors:

Max Hoetzl (10 out of 12 patents)

Ralph Paul Poor (8 out of 9 patents)

Garry W Barbee (6 out of 6 patents)

4. Thomas M Lingle (6 out of 7 patents)

5. Stephen Harry Verhoff (6 out of 6 patents)

Please report any incorrect information to [email protected]

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