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For the Inventor, By the Inventor

Houston, TX, United States of America

Stone & Webster, Inc.


USPTO Granted Patents = 19

% Expired Patents = 21.1


Trademarks = 5

Forward Citations = 47

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26 inventors (with patents filed for the assignee):

goldMedal Brian Maerz (7 out of 19 patents)

silverMedal Vijay Nanda (6 out of 24 patents)

bronzeMedal Michael C Clark (6 out of 46 patents)

4.  Maruti Bhandarkar (5 out of 24 patents)

5.  Chung-Ming Chi (4 out of 14 patents)

6.  Vincent A Welch (3 out of 11 patents)

7.  Shyh-Yuan Henry Hwang (3 out of 13 patents)

8.  Slawomir A Oleksy (2 out of 13 patents)

9.  Matthew J Vincent (2 out of 42 patents)

10.  Carlos N Lopez (2 out of 7 patents)

11.  Dana E Johnson (2 out of 4 patents)

12.  David P Palmer (2 out of 8 patents)

13.  Joseph C Peters (2 out of 8 patents)

14.  Leslie F Whittle (2 out of 3 patents)

15.  Waheed Mukaddam (2 out of 3 patents)


19 patents:

1. 8629311 - Alkylated aromatics production (2014-01-14),
2. 8258360 - Multiphase alkylaromatics production (2012-09-04),
3. 8088956 - BPA process improvement (2012-01-03),
4. 7939704 - Process for preparing ethylbenzene using vapor phase alkylation and liquid phase transalkylation (2011-05-10),
5. 7923590 - Production of alkylaromatic compounds (2011-04-12),
6. 7923589 - Alkylaromatics production using dilute alkene (2011-04-12),
7. 7922980 - EB/SM splitter heat recovery (2011-04-12),
8. 7902408 - BPA process improvement (2011-03-08),
9. 7799961 - Process of using a high activity catalyst for the transalkylation of aromatics (2010-09-21),
10. 7777087 - Liquid phase alkylation with multiple catalysts (2010-08-17),
11. 7777086 - Production of alkyl aromatic compounds (2010-08-17),
12. 7752887 - Detection of impurities in gas streams (2010-07-13),
13. 7745676 - Alkylaromatics production (2010-06-29),
14. 7642390 - EB/SM splitter heat recovery (2010-01-05),
15. 7449420 - Production of alkyl aromatic compounds with catalyst reactivation (2008-11-11),
Company Overview
Stone & Webster, Inc. is a prominent engineering and construction firm based in Houston, Texas, specializing in the energy and infrastructure sectors. The company provides a wide range of services including project management, engineering design, and construction management, focusing on delivering innovative solutions for complex projects. With expertise in power generation, oil and gas, and environmental services, Stone & Webster plays a critical role in advancing technology and infrastructure development across various regions.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

Stone & Webster, Inc. USPTO Patent Assignee Logo
19 Patents

#282 in Houston, TX

#1,033 in Texas

#17,138 in US

#32,663 in the World

Houston, TX (US)
Houston, TX, United States of America

Stone & Webster, Inc.

Forward Citations = 47

26 inventors:

goldMedal Brian Maerz (7 out of 19 patents)

silverMedal Vijay Nanda (6 out of 24 patents)

bronzeMedal Michael C Clark (6 out of 46 patents)

4.  Maruti Bhandarkar (5 out of 24 patents)

5.  Chung-Ming Chi (4 out of 14 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Stone & Webster, Inc.. Retrieved from https://idiyas.com/company/stone-and-webster

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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