Westlake Chemical Corporation

Calculating rank

USPTO Granted Patents = 4

Trademarks = 2

Forward Citations = 1

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6 inventors (with patents filed for the assignee):

Dmitry Yashin (2 out of 14 patents)

David C Payne (1 out of 2 patents)

Ken M Istre (1 out of 1 patent)

4. Matthew Sumpter (1 out of 2 patents)

5. Mingbo He (1 out of 1 patent)

6. Ervin Mubarekyan (1 out of 1 patent)

4 patents: Sort by Forward Citations

1. 12509562 - Epoxy resin compositions and downhole uses thereof (2025-12-30),

2. 11396966 - System, method and apparatus for sheathed retainer for a restrained pipe joint (2022-07-26),

3. 11131408 - System, method and apparatus for expansion coupling for pipes (2021-09-28),

4. 7503961 - Boiler feed water deaerator method and apparatus (2009-03-17),

Company Overview

Westlake Chemical Corporation is a global manufacturer and supplier of petrochemicals, polymers and building products. With a focus on innovation, sustainability and customer satisfaction, Westlake strives to provide high-quality products for a wide range of industries. The company operates in North America, Europe and Asia, serving a diverse customer base worldwide.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

4 Patents

#1,004 in Houston, TX

#3,944 in Texas

#60,704 in US

Houston, TX, United States of America