For the Inventor, By the Inventor

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Duarte, CA, United States of America

Smith Engineering Company

USPTO Granted Patents = 11

Forward Citations = 145

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12 inventors (with patents filed for the assignee):

Melanius D'Souza (5 out of 8 patents)

Gary Lee Martin (2 out of 3 patents)

James A York, Deceased (2 out of 2 patents)

4. Erwin Hendricks (2 out of 2 patents)

5. Thomas James Truppi (2 out of 2 patents)

6. James A York (2 out of 4 patents)

7. Jeffrey C Johnson (1 out of 12 patents)

8. Marlin D Plejdrup (1 out of 1 patent)

9. David Chiles (1 out of 1 patent)

10. Theodore R Wheeler (1 out of 1 patent)

11. Richard L Hartman (1 out of 1 patent)

12. Max M Aydelott (1 out of 1 patent)

11 patents: Sort by Forward Citations

1. 5871349 - Rotary valve thermal oxidizer (1999-02-16),

2. 5810581 - Pre-heating of process stream for thermal oxidizers (1998-09-22),

3. 5770165 - Regenerative thermal oxidizer with floor-mounted media support (1998-06-23),

4. 5453259 - Two-bed regenerative thermal oxidizer with trap for volatile organic (1995-09-26),

5. 5365863 - Regenerative thermal oxidizer with wood waste burner (1994-11-22),

6. 5346393 - Multiple-bed thermal oxidizer control damper system (1994-09-13),

7. 5259757 - Method and apparatus for smokeless burnout of regenerative thermal (1993-11-09),

8. 5098286 - Regenerative thermal incinerator apparatus (1992-03-24),

9. 5026277 - Regenerative thermal incinerator apparatus (1991-06-25),

10. 4133374 - Heat exchanger (1979-01-09),

11. 4103738 - Replaceable inlet means for heat exchanger (1978-08-01),

Smith Engineering Company is a leading provider of engineering solutions for industrial and commercial clients. With a focus on quality and innovation, we offer a wide range of services including design, fabrication, installation, and maintenance. Our team of experienced engineers and technicians strive to deliver excellence in every project we undertake.

Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

11 Patents

#4 in Duarte, CA

#6,528 in California

#27,470 in US

#51,671 in the World

Duarte, CA, United States of America

Smith Engineering Company

Forward Citations = 145

12 inventors:

Melanius D'Souza (5 out of 8 patents)

Gary Lee Martin (2 out of 3 patents)

James A York, Deceased (2 out of 2 patents)

4. Erwin Hendricks (2 out of 2 patents)

5. Thomas James Truppi (2 out of 2 patents)

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