Maintenance fees coming due

Texopco LLC

7 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Jan 18, 2027. Unpaid by Jul 19, 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 11,701,619	Diagnostic Methods and Apparatus for Electrodialysis Texopco, LLC In force Fee due Jan 18, 2027 Lapses if unpaid Jul 19, 2027 Term ends Dec 16, 2041 · High confidence	Texopco, LLC	In force	Jan 18, 2027	Jul 19, 2027	Term ends Dec 16, 2041	High confidence
US 11,739,005	Liquid Crystallizer Salting Out Solution Texopco, LLC In force Fee due Feb 28, 2027 Lapses if unpaid Aug 30, 2027 Term ends Dec 3, 2041 · High confidence	Texopco, LLC	In force	Feb 28, 2027	Aug 30, 2027	Term ends Dec 3, 2041	High confidence
US 11,833,474	Bipolar Electrochemical Spacer Texopco, LLC In force Fee due Jun 5, 2027 Lapses if unpaid Dec 6, 2027 Term ends Dec 9, 2038 · High confidence	Texopco, LLC	In force	Jun 5, 2027	Dec 6, 2027	Term ends Dec 9, 2038	High confidence
US 11,911,729	3D Printed Spacers for Ion-Exchange Device Texopco, LLC In force Fee due Aug 27, 2027 Lapses if unpaid Feb 28, 2028 Term ends Jun 24, 2039 · High confidence	Texopco, LLC	In force	Aug 27, 2027	Feb 28, 2028	Term ends Jun 24, 2039	High confidence
US 11,912,591	Electrodialysis Processes Using an Organic Solvent for Separating Dissolved Species Texopco, LLC In force Fee due Aug 27, 2027 Lapses if unpaid Feb 28, 2028 Term ends Dec 7, 2041 · High confidence	Texopco, LLC	In force	Aug 27, 2027	Feb 28, 2028	Term ends Dec 7, 2041	High confidence
US 11,918,935	Spacers for Ion-Exchange Device Texopco, LLC In force Fee due Sep 5, 2027 Lapses if unpaid Mar 6, 2028 Term ends Nov 15, 2039 · High confidence	Texopco, LLC	In force	Sep 5, 2027	Mar 6, 2028	Term ends Nov 15, 2039	High confidence
US 10,604,426	High Efficiency Electrochemical Desalination System That Incorporates Participating Electrodes Texopco, LLC In force Fee due Sep 30, 2027 Lapses if unpaid Mar 31, 2028 Term ends Jun 19, 2037 · High confidence	Texopco, LLC	In force	Sep 30, 2027	Mar 31, 2028	Term ends Jun 19, 2037	High confidence

7 of 7 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.