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Pittsburgh, PA, United States of America

Dravo Corporation

USPTO Granted Patents = 123

Trademarks = 1

Forward Citations = 1,175

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110 inventors (with patents filed for the assignee):

Louis H Jaquay (12 out of 12 patents)

George B Karnofsky (10 out of 12 patents)

Aubrey C Briggs (8 out of 17 patents)

4. Willard Binzen (6 out of 6 patents)

5. Fred Erich Cappel (5 out of 9 patents)

6. Joseph Vlnaty (5 out of 5 patents)

7. Ira W Lakin (4 out of 4 patents)

8. Arthur F Saxon (4 out of 4 patents)

9. Harry James Kent (4 out of 4 patents)

10. Gilbert Blair (4 out of 4 patents)

11. Alois Kilian (4 out of 4 patents)

12. Donald A Gessler (3 out of 5 patents)

13. Ernest R Ramirez (3 out of 13 patents)

14. Thomas E Ban (3 out of 13 patents)

15. Walter Hastik (3 out of 4 patents)

Core Competencies:

Dust Containment

Rotary Car Dumper

Solvent Extraction

Bulk Material Handling

Thermal Treatment

Heat Recovery

Fine Particle Removal

Wastewater Treatment

Sinter Cooler

Coke Oven

Heavy Duty Conveyor

Material Processing

123 patents: Sort by Forward Citations

1. 4779992 - Lime slaker (1988-10-25),

2. 4760968 - Integrated dust containment system for rotary crusher/breakers and the (1988-08-02),

3. 4714097 - Dust containment system for bulk cargo containers (1987-12-22),

4. 4699187 - Dust control in hoppers (1987-10-13),

5. 4689007 - Process of thermally treating lump or agglomerated materials on a (1987-08-25),

6. 4683029 - Circular solvent extractor (1987-07-28),

7. 4655401 - Rotary car dumper with lump breaker apparatus (1987-04-07),

8. 4626418 - Removal of SO.sub.2 from SO.sub.2 -containing gases (1986-12-02),

9. 4609321 - Rotary car dumper with dust collection system (1986-09-02),

10. 4603225 - Process for separating dimethyl ether from a hydrocarbon mixture (1986-07-29),

11. 4575055 - Circular traveling grate machine (1986-03-11),

12. 4573637 - Accelerating slugs of liquid (1986-03-04),

13. 4572484 - Pallet construction for traveling grate machines (1986-02-25),

14. 4563273 - Process and apparatus for separating fines from micella streams (1986-01-07),

15. 4563195 - Method for treatment of tar-bearing fuel gas (1986-01-07),

Dravo Corporation is a leading engineering and construction company based in the United States. With a focus on heavy and industrial construction projects, Dravo has earned a reputation for delivering innovative solutions to complex challenges. Their services include project management, design, engineering, procurement, and construction across various sectors including energy, infrastructure, and manufacturing. Dravo's commitment to quality, safety, and customer satisfaction has made them a trusted partner for numerous clients worldwide.

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

Company Badge

USPTO Data Jan 1 1976 - Sep 22 2026

123 Patents

#29 in Pittsburgh, PA

#128 in Pennsylvania

#3,147 in US

#6,493 in the World

Pittsburgh, PA, United States of America

Dravo Corporation

Forward Citations = 1,175

110 inventors:

Louis H Jaquay (12 out of 12 patents)

George B Karnofsky (10 out of 12 patents)

Aubrey C Briggs (8 out of 17 patents)

4. Willard Binzen (6 out of 6 patents)

5. Fred Erich Cappel (5 out of 9 patents)

Please report any incorrect information to [email protected]

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