BWXT Advanced Technologies LLC

39 patents currently held · Updated Nov 14, 2026

4 more in force are now held by other companies

Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.

Ending by 2030

Dec 2039

Next term end

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

20262027202820292030203120322033203420352036203720382039204020412042204320442045

Fee deadlines

Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.

2 fees due Feb 22, 2027
1 fee due Mar 19, 2027
The maintenance fee for Resin Adhesion Failure Detection (US 11,760,005) comes due Mar 19, 2027. Unpaid by Sep 20, 2027, it lapses early.
1 fee due May 14, 2027
The maintenance fee for Functionally Graded Lattice Cermet Fuel Structure with Shape Corresponding to a Mathematically-Based Periodic Solid, Particularly for Nuclear Thermal Propulsion Applications (US 11,817,225) comes due May 14, 2027. Unpaid by Nov 15, 2027, it lapses early.
1 fee due Jun 19, 2027
The maintenance fee for Reactor Design with Controlled Thermal Neutron Flux for Enhanced Neutron Activation Potential (US 11,848,112) comes due Jun 19, 2027. Unpaid by Dec 20, 2027, it lapses early.
1 fee due Sep 26, 2027
The maintenance fee for Molten Metal Fuel Buffer in Fission Reactor and Method of Manufacture (US 11,942,229) comes due Sep 26, 2027. Unpaid by Mar 27, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

5 of the patents on this record were granted since Aug 16, 2026

Patents held now

Soonest term end first. Each date below is computed on that patent's own page, which shows the rule, the adjustments and the fee history it was derived from.

Patent	Title	Status	Expires	Confidence
US 12,094,618	Nuclear Reactor Fuel Assemblies and Process for Production In force Term ends Dec 31, 2039 · High confidence	In force	Term ends Dec 31, 2039	High confidence
US 11,309,095	Control Rod Drive Mechanism with Separate Latch and Drive Coils In force Term ends Mar 26, 2040 · High confidence	In force	Term ends Mar 26, 2040	High confidence
US 11,424,041	Functionally Graded Lattice Cermet Fuel Structure with Shape Corresponding to a Mathematically-Based Periodic Solid, Particularly for Nuclear Thermal Propulsion Applications In force Term ends Mar 31, 2040 · High confidence	In force	Term ends Mar 31, 2040	High confidence
US 11,817,225	Functionally Graded Lattice Cermet Fuel Structure with Shape Corresponding to a Mathematically-Based Periodic Solid, Particularly for Nuclear Thermal Propulsion Applications In force Term ends Mar 31, 2040 · High confidence	In force	Term ends Mar 31, 2040	High confidence
US 12,159,726	Functionally Graded Lattice Cermet Fuel Structure with Shape Corresponding to a Mathematically-Based Periodic Solid, Particularly for Nuclear Thermal Propulsion Applications In force Ends no later than Mar 31, 2040 · Medium confidence	In force	Ends no later than Mar 31, 2040	Medium confidence
US 12,159,727	Functionally Graded Lattice Cermet Fuel Structure with Shape Corresponding to a Mathematically-Based Periodic Solid, Particularly for Nuclear Thermal Propulsion Applications In force Ends no later than Mar 31, 2040 · Medium confidence	In force	Ends no later than Mar 31, 2040	Medium confidence
US 11,495,363	Small Modular Mobile Fission Reactor In force Term ends May 1, 2040 · High confidence	In force	Term ends May 1, 2040	High confidence
US 12,437,891	Using Additive Manufacturing In Creating A Nuclear Fuel Structure With A Shape Corresponding To A Mathematically-Based Periodic Solid Having A Triply Periodic Minimal Surface In force Term ends May 13, 2040 · High confidence	In force	Term ends May 13, 2040	High confidence
US 11,469,004	Space Reactor Gas Assist Control Rod Release Mechanism In force Term ends May 21, 2040 · High confidence	In force	Term ends May 21, 2040	High confidence
US 11,380,449	Control Drum System for Use with Nuclear Reactors In force Term ends Sep 17, 2040 · High confidence	In force	Term ends Sep 17, 2040	High confidence

10 of 39 patents shown.

Pro members see all 39.

Pro members: see all 39 patents

Also on record, not counted in the 39: 4 patents in force now held by others. List them

Sources and methods

Compiled from the USPTO record, grants, published applications and recorded assignments, not yet reviewed by hand. How this record was built

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

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Published applications

US patent applications published under this name that have not become patents. An application is published about eighteen months after its earliest filing; one that has not been published is in no public record.

13 pending

List them