NR Engineering Co., Ltd.
Records under this name other than the patents NR Engineering Co., Ltd. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned. None of them is counted in the 40 patents it holds.
Back to NR Engineering Co., Ltd.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 10,237,986 | Shell Structure for Thyristor Trigger Unit Formerly held In force · High confidence | In force | High confidence | |
| US 11,753,843 | Valve Tower Reinforcing Structure and Reinforcing Method Formerly held In force · High confidence | In force | High confidence | |
| US 11,374,411 | Converter Control Method and Device Lapsed on the fee record Ended Jun 28, 2026 · High confidence | Lapsed on the fee record | Ended Jun 28, 2026 | High confidence |
| US 11,342,744 | Multi-voltage level direct current grid system and control protection method Lapsed on the fee record Ended May 24, 2026 · From the USPTO record | Lapsed on the fee record | Ended May 24, 2026 | From the USPTO record |
| US 11,264,891 | Redundant energy acquisition circuit of power module, and control method thereof Lapsed on the fee record Ended Mar 1, 2026 · From the USPTO record | Lapsed on the fee record | Ended Mar 1, 2026 | From the USPTO record |
| US 11,190,020 | Direct current voltage coordination control method Lapsed on the fee record Ended Nov 30, 2025 · From the USPTO record | Lapsed on the fee record | Ended Nov 30, 2025 | From the USPTO record |
| US 11,146,071 | Coordinated control method and device for series voltage source converter valve group Lapsed on the fee record Ended Oct 12, 2025 · From the USPTO record | Lapsed on the fee record | Ended Oct 12, 2025 | From the USPTO record |
| US 11,063,424 | Adaptive protection method for impedance of parallel capacitors Lapsed on the fee record Ended Jul 13, 2025 · From the USPTO record | Lapsed on the fee record | Ended Jul 13, 2025 | From the USPTO record |
| US 11,009,542 | Thyristor valve test system based on cooperation of logical functions of software Lapsed on the fee record Ended May 18, 2025 · From the USPTO record | Lapsed on the fee record | Ended May 18, 2025 | From the USPTO record |
| US 9,608,511 | Method for charging modular multilevel converter Lapsed on the fee record Ended Mar 28, 2025 · From the USPTO record | Lapsed on the fee record | Ended Mar 28, 2025 | From the USPTO record |