Maintenance fees coming due

Suncoke Technology and Development LLC

29 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Dec 4, 2026. Unpaid by Jun 4, 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 10,308,876	Burn Profiles for Coke Operations Suncoke Technology and Development LLC. In force Fee due Dec 4, 2026 Lapses if unpaid Jun 4, 2027 Term ends Nov 4, 2034 · Medium confidence	Suncoke Technology and Development LLC.	In force	Dec 4, 2026	Jun 4, 2027	Term ends Nov 4, 2034	Medium confidence
US 10,323,192	Systems and Methods for Improving Quenched Coke Recovery Suncoke Technology and Development LLC. In force Fee due Dec 18, 2026 Lapses if unpaid Jun 21, 2027 Term ends Dec 28, 2032 · High confidence	Suncoke Technology and Development LLC.	In force	Dec 18, 2026	Jun 21, 2027	Term ends Dec 28, 2032	High confidence
US 11,680,208	Spring-Loaded Heat Recovery Oven System and Method Suncoke Technology and Development LLC In force Fee due Dec 20, 2026 Lapses if unpaid Jun 21, 2027 Ends no later than Dec 27, 2039 · Medium confidence	Suncoke Technology and Development LLC	In force	Dec 20, 2026	Jun 21, 2027	Ends no later than Dec 27, 2039	Medium confidence
US 11,692,138	Automatic Draft Control System for Coke Plants Suncoke Technology and Development LLC In force Fee due Jan 4, 2027 Lapses if unpaid Jul 6, 2027 Ends no later than Aug 17, 2032 · Medium confidence	Suncoke Technology and Development LLC	In force	Jan 4, 2027	Jul 6, 2027	Ends no later than Aug 17, 2032	Medium confidence
US 11,746,296	Methods and Systems for Improved Quench Tower Design Suncoke Technology and Development LLC In force Fee due Mar 5, 2027 Lapses if unpaid Sep 7, 2027 Ends no later than Mar 15, 2033 · Medium confidence	Suncoke Technology and Development LLC	In force	Mar 5, 2027	Sep 7, 2027	Ends no later than Mar 15, 2033	Medium confidence
US 11,760,937	Oven Uptakes Suncoke Technology and Development LLC In force Fee due Mar 19, 2027 Lapses if unpaid Sep 20, 2027 Term ends Dec 27, 2039 · High confidence	Suncoke Technology and Development LLC	In force	Mar 19, 2027	Sep 20, 2027	Term ends Dec 27, 2039	High confidence
US 11,767,482	High-Quality Coke Products Suncoke Technology and Development LLC In force Fee due Mar 26, 2027 Lapses if unpaid Sep 27, 2027 Ends no later than May 3, 2041 · Medium confidence	Suncoke Technology and Development LLC	In force	Mar 26, 2027	Sep 27, 2027	Ends no later than May 3, 2041	Medium confidence
US 11,788,012	Integrated Coke Plant Automation and Optimization Using Advanced Control and Optimization Techniques Suncoke Technology and Development LLC In force Fee due Apr 17, 2027 Lapses if unpaid Oct 18, 2027 Term ends Jan 4, 2036 · High confidence	Suncoke Technology and Development LLC	In force	Apr 17, 2027	Oct 18, 2027	Term ends Jan 4, 2036	High confidence
US 11,795,400	Coke Ovens Having Monolith Component Construction Suncoke Technology and Development LLC In force Fee due Apr 24, 2027 Lapses if unpaid Oct 25, 2027 Term ends Sep 15, 2035 · High confidence	Suncoke Technology and Development LLC	In force	Apr 24, 2027	Oct 25, 2027	Term ends Sep 15, 2035	High confidence
US 9,169,439	Method and Apparatus for Testing Coal Coking Properties Suncoke Technology and Development LLC In force Fee due Apr 27, 2027 Lapses if unpaid Oct 27, 2027 Term ends Aug 31, 2033 · High confidence	Suncoke Technology and Development LLC	In force	Apr 27, 2027	Oct 27, 2027	Term ends Aug 31, 2033	High confidence
19 more maintenance fees coming due in the 12 months from Nov 14, 2026 · Pro

10 of 29 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.