Maintenance fees coming due

Clarcor Inc.

4 maintenance fees come due in the 12 months from Nov 15, 2026, the next on Dec 18, 2026. Unpaid by Jun 21, 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 10,323,640	Fuel Filter Assembly With Brushless DC Pump Clarcor Inc. In force Fee due Dec 18, 2026 Lapses if unpaid Jun 21, 2027 Term ends May 21, 2037 · High confidence	Clarcor Inc.	In force	Dec 18, 2026	Jun 21, 2027	Term ends May 21, 2037	High confidence
US 9,067,156	Filter Cartridge Assembly and Method of Manufacture Thereof Clarcor Inc. In force Fee due Dec 30, 2026 Lapses if unpaid Jun 30, 2027 Term ends Jul 25, 2033 · High confidence	Clarcor Inc.	In force	Dec 30, 2026	Jun 30, 2027	Term ends Jul 25, 2033	High confidence
US 9,181,635	Methods for the Production of Microfibers and Nanofibers Using a Multiple Chamber Fiber Producing Device Clarcor Inc. In force Fee due May 10, 2027 Lapses if unpaid Nov 10, 2027 Term ends Feb 7, 2032 · High confidence	Clarcor Inc.	In force	May 10, 2027	Nov 10, 2027	Term ends Feb 7, 2032	High confidence
US 10,508,631	Automated Water Drain System Clarcor Inc. In force Fee due Jun 17, 2027 Lapses if unpaid Dec 17, 2027 Term ends Feb 5, 2038 · High confidence	Clarcor Inc.	In force	Jun 17, 2027	Dec 17, 2027	Term ends Feb 5, 2038	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.