Maintenance fees coming due
Advanced Technology & Materials Co., Ltd.
4 maintenance fees come due in the 12 months from Nov 15, 2026, the next on Dec 9, 2026. Unpaid by Jun 9, 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 9,053,847 | Iron-Based Amorphous Alloy Broad Ribbon and Its Manufacturing Method In force Fee due Dec 9, 2026 Lapses if unpaid Jun 9, 2027 · High confidence | Advanced Technology & Materials Co., Ltd. | In force | Dec 9, 2026 | Jun 9, 2027 | High confidence | |
| US 10,385,428 | Powder metallurgy wear-resistant tool steel In force Fee due Feb 20, 2027 Lapses if unpaid Aug 20, 2027 · High confidence | Advanced TECHNOLOGY&MATERIALS Co.,Ltd. | In force | Feb 20, 2027 | Aug 20, 2027 | High confidence | |
| US 10,385,442 | Method for Preparing Rare-Earth Permanent Magnetic Material with Grain Boundary Diffusion Using Composite Target by Vapor Deposition In force Fee due Feb 20, 2027 Lapses if unpaid Aug 20, 2027 · High confidence | Advanced Technology & Materials Co., Ltd. | In force | Feb 20, 2027 | Aug 20, 2027 | High confidence | |
| US 11,984,258 | Rare Earth Permanent Magnet Material and Preparation Method Thereof In force Fee due Nov 14, 2027 Lapses if unpaid May 15, 2028 · High confidence | Advanced Technology & Materials Co. Ltd. | In force | Nov 14, 2027 | May 15, 2028 | High confidence |
4 of 4 patents shown. Soonest fee due date first, then patent number.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.