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| 97492256 | WESTLAKE | Westlake Corporation | — |
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| 97494266 | WESTLAKE | Westlake Corporation | 8069821 |
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| 97492244 | WESTLAKE | Westlake Corporation | 7827432 |
| 77361686 | WESTLAKE | WESTLAKE MANUFACTURING, INC. | 4468129 |
| 97495285 | WESTLAKE | Westlake Corporation | — |
| 97494272 | WESTLAKE | Westlake Corporation | — |
| 97492251 | WESTLAKE | Westlake Corporation | — |
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| 73715992 | WESTLAKE | WESTLAKE HARDWARE, INC. | 1517612 |
| 75175049 | WESTLAKE | WESTLAKE POLYMERS LLC | 2293058 |
| 75372247 | WESTLAKE | Westlake Natural Medicines, Inc. | 2612946 |
| 73695268 | WESTLAKE | ZHEJIANG LIGHT INDUSTRIAL PRODUCTS IMPORT & EXPORT CORP. | 1493921 |
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| 73094912 | WESTLAKE | CONTINENTAL WESTERN CORPORATION | 1062806 |
| 78126037 | WESTLAKE | WESTLAKE CLUTCH U.S.A. LTD | 2762896 |
| 78504804 | WESTLAKE | FOREIGN TIRE SALES, iNC. | — |
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| 78254927 | WESTLAKE | Guarino, Jerid, M. | — |
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| 71546353 | WESTLAKE | ELECTRIC CONTROLLER & MANUFACTURING COMPANY, THE | 0578142 |
| 71546354 | WESTLAKE | BRIARDALE CO. | 0503519 |
| 72202225 | WESTLAKE | BRIARDALE CO. | 0786797 |
