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Boston, MA, United States of America

Stone & Webster Engineering Corp.

USPTO Granted Patents = 122

Trademarks = 3

Forward Citations = 2,377

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92 inventors (with patents filed for the assignee):

Robert J Gartside (29 out of 72 patents)

Herman N Woebcke (26 out of 28 patents)

Axel R Johnson (20 out of 38 patents)

4. Richard C Norton (9 out of 11 patents)

5. George Garabedian (9 out of 9 patents)

6. Arju H Bhojwani (7 out of 7 patents)

7. Dennis A Duncan (6 out of 6 patents)

8. Joseph L Ross, Jr (6 out of 6 patents)

9. Robert A DeLuca (6 out of 6 patents)

10. Jacob N Rubin (5 out of 6 patents)

11. Mark Whitney (4 out of 5 patents)

12. Robert E Roemer (4 out of 7 patents)

13. Alan R Goelzer (4 out of 4 patents)

14. Maxim Karafian (4 out of 4 patents)

15. Irving C Tsang (4 out of 4 patents)

Core Competencies:

Ceramic Slot Reactor

Ethylene Production

Catalytic Cracking

Olefin Recovery

Spent Caustic Treatment

Fluidized Cracking Catalysts

Hydrocarbon Pyrolysis

High Pressure Reformers

Thermal Cracking Furnace

Synthesis Gas Production

Particulate Solids Cracking

Chemical Absorption Process

122 patents: Sort by Forward Citations

1. 6383455 - Ceramic slot reactor for ethylene production (2002-05-07),

2. 6312652 - Ceramic dip pipe and tube reactor for ethylene production (2001-11-06),

3. 6271433 - Cat cracker gas plant process for increased olefins recovery (2001-08-07),

4. 6267359 - Advanced tray support system using orthogonal grillage (2001-07-31),

5. 6235961 - Process for pretreating cracked gas before caustic tower treatment in ehtylene plants (2001-05-22),

6. 6210583 - Spent caustic pretreatment and enhanced oxidation process (2001-04-03),

7. 5981818 - Integrated cracking and olefins derivative process utilizing dilute (1999-11-09),

8. 5976355 - Low residence time catalytic cracking process (1999-11-02),

9. 5939596 - Butadiene removal system for ethylene plants with front end (1999-08-17),

10. 5891346 - Spent caustic system (1999-04-06),

11. 5885422 - Spent caustic (pre)treatment process (1999-03-23),

12. 5859304 - Chemical absorption process for recovering olefins from cracked gases (1999-01-12),

13. 5837129 - Process and apparatus for separating fluidized cracking catalysts from (1998-11-17),

14. 5768913 - Process based mixed refrigerants for ethylene plants (1998-06-23),

15. 5766558 - Fluid catalytic cracking process and apparatus (1998-06-16),

Stone & Webster Engineering Corp. is a global engineering and construction company that specializes in providing a wide range of services to the energy industry. With a legacy dating back to 1889, the company has a proven track record of delivering complex projects around the world. Their expertise includes power generation, transmission and distribution, renewable energy, environmental remediation, and industrial infrastructure. Stone & Webster is committed to delivering innovative and sustainable solutions that meet the evolving needs of their clients. Visit their website for more information and to explore their portfolio of successful projects.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

122 Patents

#23 in

#3,043 in

#6,351 in the World

Boston, MA, United States of America

Stone & Webster Engineering Corp.

Forward Citations = 2,377

92 inventors:

Robert J Gartside (29 out of 72 patents)

Herman N Woebcke (26 out of 28 patents)

Axel R Johnson (20 out of 38 patents)

4. Richard C Norton (9 out of 11 patents)

5. George Garabedian (9 out of 9 patents)

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