Maintenance fees coming due

Proterial, Ltd.

135 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Nov 30, 2026. Unpaid by Jun 1, 2027, that one lapses early.

A maintenance fee does not end a patent on its due date. It falls due at 3.5, 7.5 and 11.5 years from grant, and the patent lapses only if the fee is still unpaid at the end of the six month grace period that follows.

Patent	Title	Holder	Status	Fee due	Lapses if unpaid	Expires	Confidence
US 11,664,136	Composite Cable and Composite Harness Proterial, Ltd. In force Fee due Nov 30, 2026 Lapses if unpaid Jun 1, 2027 Term ends Sep 22, 2041 · High confidence	Proterial, Ltd.	In force	Nov 30, 2026	Jun 1, 2027	Term ends Sep 22, 2041	High confidence
US 11,664,138	Composite Cable Including Collective Braided Shield Proterial, Ltd. In force Fee due Nov 30, 2026 Lapses if unpaid Jun 1, 2027 Term ends Nov 9, 2041 · High confidence	Proterial, Ltd.	In force	Nov 30, 2026	Jun 1, 2027	Term ends Nov 9, 2041	High confidence
US 11,664,158	Method of Manufacturing Coil for Torque Sensor Proterial, Ltd. In force Fee due Nov 30, 2026 Lapses if unpaid Jun 1, 2027 Term ends Mar 22, 2041 · High confidence	Proterial, Ltd.	In force	Nov 30, 2026	Jun 1, 2027	Term ends Mar 22, 2041	High confidence
US 11,664,697	Wiring Member for Rotating Electrical Machine, Fixing Structure of Wiring Member for Rotating Electrical Machine, and Rotating Electrical Machine Proterial, Ltd. In force Fee due Nov 30, 2026 Lapses if unpaid Jun 1, 2027 Term ends Feb 2, 2041 · High confidence	Proterial, Ltd.	In force	Nov 30, 2026	Jun 1, 2027	Term ends Feb 2, 2041	High confidence
US 10,310,521	Bypass Unit, a Base for a Flow Meter, a Base for a Flow Controller, a Flow Meter, and a Flow Controller Proterial, Ltd. In force Fee due Dec 4, 2026 Lapses if unpaid Jun 4, 2027 Term ends Apr 14, 2037 · High confidence	Proterial, Ltd.	In force	Dec 4, 2026	Jun 4, 2027	Term ends Apr 14, 2037	High confidence
US 11,670,450	Tapered Ferrite Core, Its Production Method and Apparatus, and Inductance Device Comprising It Proterial, Ltd. In force Fee due Dec 6, 2026 Lapses if unpaid Jun 7, 2027 Term ends Feb 20, 2040 · High confidence	Proterial, Ltd.	In force	Dec 6, 2026	Jun 7, 2027	Term ends Feb 20, 2040	High confidence
US 11,670,999	Magnetic Coupling Device Hitachi Metals, Ltd. and Tokyo Electron Limited In force Fee due Dec 6, 2026 Lapses if unpaid Jun 7, 2027 Term ends Jul 28, 2041 · High confidence	Hitachi Metals, Ltd. and Tokyo Electron Limited	In force	Dec 6, 2026	Jun 7, 2027	Term ends Jul 28, 2041	High confidence
US 11,677,075	Cathode Active Material for Lithium Ion Secondary Battery, Method for Manufacturing Cathode Active Material for Lithium Ion Secondary Battery, and Lithium Ion Secondary Battery Proterial, Ltd. In force Fee due Dec 13, 2026 Lapses if unpaid Jun 14, 2027 Term ends Dec 26, 2038 · High confidence	Proterial, Ltd.	In force	Dec 13, 2026	Jun 14, 2027	Term ends Dec 26, 2038	High confidence
US 11,678,472	Signal Transmission Cable Proterial, Ltd. In force Fee due Dec 13, 2026 Lapses if unpaid Jun 14, 2027 Term ends Dec 17, 2038 · High confidence	Proterial, Ltd.	In force	Dec 13, 2026	Jun 14, 2027	Term ends Dec 17, 2038	High confidence
US 11,680,956	Rotation Detection Device Proterial, Ltd. In force Fee due Dec 20, 2026 Lapses if unpaid Jun 21, 2027 Term ends Aug 18, 2041 · High confidence	Proterial, Ltd.	In force	Dec 20, 2026	Jun 21, 2027	Term ends Aug 18, 2041	High confidence
125 more maintenance fees coming due in the 12 months from Nov 14, 2026 · Pro

10 of 135 patents shown. Soonest fee due date first, then patent number.

Pro members see every patent with a maintenance fee coming due: number, title, status, the due date, and the date it lapses if the fee goes unpaid through the grace period.

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Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.