| TROPOLONE | Kenvue Brands LLC | 2026-03-31 |
| TROPOLONE | Lidl US, LLC | Nice-Pak Products, LLC | 2026-03-10 |
| TROPOLONE | COOLA LLC | Goodier Cosmetics | 2026-03-10 |
| TROPOLONE | Meijer, Inc. | Nice-Pak Products, LLC | 2026-02-19 |
| TROPOLONE | Target Corporation | Nice-Pak Products, LLC | 2026-02-18 |
| TROPOLONE | Valu Merchandisers Company | Nice-Pak Products, LLC | 2026-02-16 |
| TROPOLONE | Essity Professional Hygiene North America LLC | Nice-Pak Products, LLC | 2026-02-04 |
| TROPOLONE | Aldi, Inc | Nice-Pak Products, LLC | 2026-01-29 |
| TROPOLONE | Merle Norman Cosmetics, Inc | 2025-11-20 |
| TROPOLONE | Kenvue Brands LLC | 2025-11-06 |
| TROPOLONE | Kenvue Brands LLC | 2025-11-06 |
| TROPOLONE | COOLA LLC | Goodier Cosmetics | 2025-08-12 |
| TROPOLONE | Helande, LLC | Island Kinetics, Inc. d.b.a. CoValence Laboratories | 2025-06-11 |
| TROPOLONE | SKINBETTER SCIENCE LLC | 2025-01-06 |
| TROPOLONE | COOLA LLC | 2024-12-27 |
| TROPOLONE | COOLA LLC | 2024-12-27 |
| TROPOLONE | COOLA LLC | 2024-12-27 |
| TROPOLONE | COOLA LLC | Bentley Laboratories, LLC | 2024-12-27 |
| TROPOLONE | Bentley Laboratories, LLC | 2024-12-27 |
| TROPOLONE | COOLA LLC | Bentley Laboratories, LLC | 2024-12-27 |
| TROPOLONE | Face Reality, LLC | 2024-12-20 |
| TROPOLONE | Kenvue Brands LLC | 2024-12-11 |
| TROPOLONE | Kenvue Brands LLC | 2024-12-06 |
| TROPOLONE | Able C&C Co., Ltd. | HANACOS CO., LTD. | 2024-12-05 |
| TROPOLONE | Able C&C Co., Ltd. | HANACOS CO., LTD. | 2024-12-05 |
| TROPOLONE | Able C&C Co., Ltd. | Hanacos Co., Ltd. | 2024-12-05 |
| TROPOLONE | Able C&C Co., Ltd. | HANACOS CO., LTD. | 2024-12-05 |
| TROPOLONE | Able C&C Co., Ltd. | Hanacos Co., Ltd. | 2024-12-04 |
| TROPOLONE | Able C&C Co., Ltd. | Hanacos Co., Ltd. | 2024-12-04 |
| TROPOLONE | Able C&C Co., Ltd. | HANACOS CO., LTD. | 2024-12-04 |
| TROPOLONE | CP Skin Health Group, Inc. | 2024-12-03 |
| TROPOLONE | Kenvue Brands LLC | 2024-11-25 |
| TROPOLONE | MINU | Weckerle Cosmetics | 2024-09-27 |
| TROPOLONE | COOLA LLC | 2024-09-16 |
| TROPOLONE | Eminence Organic Skin Care | 2024-03-25 |
| TROPOLONE | J.R. Watkins, LLC. | 2024-02-08 |
| TROPOLONE | Bentley Laboratories, LLC | 2023-12-19 |
| TROPOLONE | Bentley Laboratories, LLC | 2023-12-19 |
| TROPOLONE | Bentley Laboratories, LLC | 2023-12-19 |
| TROPOLONE | Likewise Incorporated | Englewood Lab, Inc. | 2023-12-12 |
| TROPOLONE | Likewise Incorporated | Englewood Lab, Inc. | 2023-12-12 |
| TROPOLONE | Likewise Incorporated | Englewood Lab, Inc. | 2023-12-12 |
| TROPOLONE | COOLA LLC | 2023-11-29 |
| TROPOLONE | COOLA LLC | Bentley Laboratories, LLC | 2023-11-28 |
| TROPOLONE | ANUBIS COSMETICS SL | GDC OF FLORIDA IMPORTS, INC. | 2023-09-05 |
| Tropolone | Dermalogica | Cosway | 2022-07-15 |
| Tropolone | French Transit, Ltd. | 2022-01-06 |
| TROPOLONE | COOLA | 2021-12-26 |
| TROPOLONE | Forever Living Products | Gotha Cosmetics SRL | 2021-04-22 |
| TROPOLONE | Forever Living Products | Gotha Cosmetics SRL | 2021-04-22 |
| TROPOLONE | COOLA LLC | 2021-02-03 |
| TROPOLONE | PHARMACIST&HEALTH CO., LTD. | FINECOS | 2020-11-16 |
| Tropolone | Honest Co., Ltd. | 2020-05-01 |
| TROPOLONE | GM Holdings Co., Ltd | 2020-01-21 |
| TROPOLONE | GM Holdings Co., Ltd | 2020-01-21 |
| TROPOLONE | Gordon Laboratories, Inc. | GORDON LABORATORIES,INC | 2019-12-30 |
| TROPOLONE | Gordon Laboratories, Inc. | GORDON LABORATORIES,INC | 2019-12-30 |
| TROPOLONE | Gordon Laboratories, Inc. | GORDON LABORATORIES,INC | 2019-12-26 |
| TROPOLONE | Gordon Laboratories, Inc. | GORDON LABORATORIES,INC | 2019-12-26 |
| TROPOLONE | Gordon Laboratories, Inc. | GORDON LABORATORIES,INC | 2019-12-26 |
| TROPOLONE | Gordon Laboratories, Inc. | GORDON LABORATORIES,INC | 2019-12-16 |
| TROPOLONE | Gordon Laboratories, Inc. | GORDON LABORATORIES,INC | 2019-12-16 |
| TROPOLONE | GORDON LABORATORIES,INC | 2019-12-16 |
| TROPOLONE | Obagi Cosmeceuticals LLC | MILBAR LABORATORIES | PURETEK CORPORATION | G.S. COSMECEUTICAL USA, INC. | Bay Cities Container Corporation | 2019-12-04 |
| TROPOLONE | Obagi Cosmeceuticals LLC | MILBAR LABORATORIES | PURETEK CORPORATION | G.S. COSMECEUTICAL USA, INC. | Bay Cities Container Corporation | 2019-12-04 |
| TROPOLONE | Obagi Cosmeceuticals LLC | Bay Cities Container Corporation | PURETEK CORPORATION | G.S. COSMECEUTICAL USA, INC. | 2019-11-14 |
| TROPOLONE | Obagi Cosmeceuticals LLC | G.S. COSMECEUTICAL USA, INC. | Bay Cities Container Corporation | 2019-11-13 |
| TROPOLONE | Normalest Co., Ltd. | 2019-10-22 |
| TROPOLONE | Normalest Co., Ltd. | 2019-04-22 |
| Tropolone | French Transit, Ltd. | 2019-02-25 |
| Tropolone | French Transit, Ltd. | 2019-02-25 |
| TROPOLONE | Gordon Laboratories, Inc. | GORDON LABORATORIES,INC | 2019-01-31 |
| Tropolone | MIZON CO.,LTD. | Coson Co., Ltd._Osan Plant | 2018-07-19 |
| TROPOLONE | Sams West Inc | Apollo Health and Beauty Care Inc. | 2018-03-21 |
| Tropolone | Rodan & Fields | Apex | Bentley Labs | DHL | 2017-10-06 |
| TROPOLONE | Sams West Inc | Apollo Health and Beauty Care Inc. | 2017-08-08 |
| Tropolone | Rodan & Fields, LLC. | 2017-07-24 |
| Tropolone | Rodan & Fields, LLC. | 2017-06-08 |
| Tropolone | ECOBIO Medical Institute, Inc. | 2016-08-29 |
| TROPOLONE | OMP, Inc. | Ei INC. | 2016-08-05 |