Prosecution Insights
Last updated: April 19, 2026

Lyondellbasell

20 pending office actions • 8 clients

Portfolio Summary

20
Total Pending OAs
3
Final Rejections
17
Non-Final OAs

Client Portfolio (8 clients)

Client (Assignee)Pending OAs
Equistar Chemicals, LP 6
Basell Poliolefine Italia S.r.l. 5
Lyondellbasell Advanced Polymers Inc. 2
Equistar Chemicals, LP 2
Basell Polyolefine GmbH 2
Vp Racing Fuels, Inc. 1
Lyondellbasell Acetyls, LLC 1
Lyondellbasell Advanced Polymers Inc. 1

Pending Office Actions

App #TitleClientExaminerArt UnitStatusFiled
19229635 PLA DISPERSION AS FILTRATION CONTROL AGENT IN DRILLING FLUIDS Lyondellbasell Advanced Polymers Inc. RUNYAN, SILVANA C 3674 Non-Final OA Jun 05, 2025
19226646 ANTI-CAKING OR BLOCKING AGENT FOR TREATING SOLID ACID PRECURSOR ADDITIVES USED IN TREATING SUBTERRANEAN FORMATIONS Lyondellbasell Advanced Polymers Inc. LEE, CRYSTAL J 3674 Non-Final OA Jun 03, 2025
19051414 HIGH-OCTANE, UNLEADED AVIATION FUEL COMPOSITIONS Vp Racing Fuels, Inc. TOOMER, CEPHIA D 1771 Non-Final OA Feb 12, 2025
18717910 POLYOLEFIN FILAMENT Basell Poliolefine Italia S.r.l. THOMPSON, CAMIE S 1786 Non-Final OA Jun 07, 2024
18708524 PLASTIC DEPOLYMERIZATION USING SILICA BASED CATALYSTS Basell Poliolefine Italia S.r.l. PILCHER, JONATHAN L 1772 Non-Final OA May 08, 2024
18637014 HDPE BLENDS OF VIRGIN POLYETHYLENE AND POST CONSUMER RECYCLATE FOR BLOWN FILMS AND METHODS THEREOF Equistar Chemicals, LP COPENHEAVER, BLAINE R 1781 Non-Final OA Apr 16, 2024
18627073 BLENDS OF POST CONUMER RESINS AND POLYETHYLENE FOR QUALITY BLOWN FILM Equistar Chemicals, LP DICUS, TAMRA 1787 Non-Final OA Apr 04, 2024
18243352 BLENDS OF VIRGIN LDPE AND POST CONSUMER RECYCLATE LOW AND/OR LINEAR LOW DENSITY POLYETHYLENE AND METHODS THEREOF Equistar Chemicals, LP LISTVOYB, GREGORY 1765 Non-Final OA Sep 07, 2023
18454847 CATALYTIC OXIDATIVE DEPOLYMERIZATION PROCESS Basell Poliolefine Italia S.r.l. BOYKIN, TERRESSA M 1765 Non-Final OA Aug 24, 2023
18272409 POLYPROPYLENE COMPOSITION HAVING LOW SIT Basell Poliolefine Italia S.r.l. FOSS, DAVID ROGER 1764 Non-Final OA Jul 14, 2023
18256065 REACTOR FOR A GAS-PHASE OLEFIN POLYMERIZATION Basell Polyolefine GmbH TESKIN, FRED M 1762 Non-Final OA Jun 06, 2023
18142398 POLYOLEFIN COMPOSITIONS AND PRODUCTS Equistar Chemicals, LP COPENHEAVER, BLAINE R 1781 Non-Final OA May 02, 2023
18111088 REMOVAL OF ALDEHYDES IN ACETIC ACID PRODUCTION Lyondellbasell Acetyls, LLC JEONG, YOUNGSUL 1772 Non-Final OA Feb 17, 2023
17945336 POLYETHYLENE COMPOSITION FOR BLOW MOLDING HAVING AN IMPROVED SWELL BEHAVIOR Basell Polyolefine GmbH LENIHAN, JEFFREY S 1765 Final Rejection Sep 15, 2022
17860239 PRE-TREATMENT OF POLYOLEFIN WASTE TO IMPROVE DEPOLYMERIZATION Basell Poliolefine Italia S.r.l. ROSEBACH, CHRISTINA H.W. 1766 Final Rejection Jul 08, 2022
17845727 POLYMER RECYCLATE PROCESSES AND PRODUCTS Equistar Chemicals, LP RIETH, STEPHEN EDWARD 1759 Non-Final OA Jun 21, 2022
17845759 POLYMER RECYCLATE PROCESSES AND PRODUCTS Equistar Chemicals, LP RIETH, STEPHEN EDWARD 1759 Non-Final OA Jun 21, 2022
17845673 POLYMER RECYCLATE PROCESSES AND PRODUCTS Equistar Chemicals, LP RIETH, STEPHEN EDWARD 1759 Non-Final OA Jun 21, 2022
17845636 POLYMER RECYCLATE PROCESSES AND PRODUCTS Equistar Chemicals, LP RIETH, STEPHEN EDWARD 1759 Non-Final OA Jun 21, 2022
17526778 THERMOSET POLYESTER BMC FORMULA FOR DIRECT METALLIZED FORWARD LIGHTING REFLECTOR Lyondellbasell Advanced Polymers Inc. CHEN, VIVIAN 1787 Final Rejection Nov 15, 2021

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