For the Inventor, By the Inventor

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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),

Company Overview

Dravo Corporation, based in Pittsburgh, PA, specializes in advanced dust control systems that enhance operational efficiency and safety in various industrial applications. The company focuses on technologies related to dust containment, rotary car dumpers, and bulk material handling, ensuring effective management of fine particles and waste materials. Additionally, Dravo is involved in thermal treatment and heat recovery processes, as well as innovative solutions for wastewater treatment, contributing to sustainable practices in the industry.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

123 Patents

#29 in Pittsburgh, PA

#128 in Pennsylvania

#3,156 in US

#6,513 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)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Dravo Corporation. Retrieved from https://idiyas.com/company/dravo

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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