Sumation Co., Ltd.
Records under this name other than patents Sumation Co., Ltd. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,608,986 | Metal Complex, Polymer Compound and Device Containing Those now held by Sumitomo Chemical Company, Limited In force · High confidence | In force | High confidence | |
| US 8,878,163 | Light-Emitting Device and 9,9 Biphenyl Fluorene Materials Therefor now held by Sumitomo Chemical Co., Ltd. In force · High confidence | In force | High confidence | |
| US 8,927,115 | Organic Electroluminescent Device now held by Sumitomo Chemical Company, Limited In force · High confidence | In force | High confidence | |
| US 9,048,442 | Composition Containing a Metal Complex and Organic Compound, and Light-Emitting Element Using Said Compound now held by Sumitomo Chemical Company, Limited In force · High confidence | In force | High confidence | |
| US 8,822,633 | High Bandgap Arylene Polymers now held by Sumitomo Chemical Co., Ltd. Lapsed on the fee record Ended Sep 2, 2026 · High confidence | Lapsed on the fee record | Ended Sep 2, 2026 | High confidence |
| US 8,815,414 | Polymer Compound and Polymer Light Emitting Device Using the Same now held by Sumitomo Chemical Company, Limited Lapsed on the fee record Ended Aug 26, 2026 · High confidence | Lapsed on the fee record | Ended Aug 26, 2026 | High confidence |
| US 8,697,256 | Composition Comprising Phosphorescent Compound and Light Emitting Device Using the Composition now held by Sumitomo Chemical Company, Limited Lapsed on the fee record Ended Apr 15, 2026 · High confidence | Lapsed on the fee record | Ended Apr 15, 2026 | High confidence |
| US 8,614,011 | Electroluminescent Materials and Optical Device now held by Sumitomo Chemical Co., Ltd. Lapsed on the fee record Ended Dec 24, 2025 · High confidence | Lapsed on the fee record | Ended Dec 24, 2025 | High confidence |
| US 8,604,464 | Blue Light-Emitting Material now held by Sumitomo Chemical Co., Ltd. Lapsed on the fee record Ended Dec 10, 2025 · High confidence | Lapsed on the fee record | Ended Dec 10, 2025 | High confidence |
| US 8,592,544 | Polymeric Compound Containing Metal Complex Residue and Element Comprising Same now held by Sumitomo Chemical Company, Limited Lapsed on the fee record Ended Nov 26, 2025 · Medium confidence | Lapsed on the fee record | Ended Nov 26, 2025 | Medium confidence |