Cerion, LLC

20 patents currently held · Updated Nov 14, 2026

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

Previously recorded as Cerion Enterprises, LLC (to 2015)

Ending by 2030

Sep 2027

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 Apr 3 to 8, 2027 · next Apr 3
1 fee due Jun 30, 2027
The maintenance fee for Cobalt oxide nanoparticle preparation (US 10,519,042) comes due Jun 30, 2027. Unpaid by Jan 3, 2028, it lapses early.
1 fee due Jul 28, 2027
The maintenance fee for Rapid method for production of cerium-containing oxide organic colloids (US 10,544,376) comes due Jul 28, 2027. Unpaid by Jan 28, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

Nothing was recorded against this company's patents in the last 90 days.

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 9,221,032	Process for making cerium dioxide nanoparticles In force Term ends Sep 4, 2027 · From the USPTO record	In force	Term ends Sep 4, 2027	From the USPTO record
US 9,303,223	Method of making cerium oxide nanoparticles In force Ends no later than Sep 4, 2027 · From the USPTO record	In force	Ends no later than Sep 4, 2027	From the USPTO record
US 9,340,738	Method of making cerium oxide nanoparticles In force Ends no later than Sep 4, 2027 · From the USPTO record	In force	Ends no later than Sep 4, 2027	From the USPTO record
US 10,435,639	Fuel additive containing lattice engineered cerium dioxide nanoparticles In force Ends no later than Dec 17, 2028 · From the USPTO record	In force	Ends no later than Dec 17, 2028	From the USPTO record
US 9,993,803	Method of preparing cerium dioxide nanoparticles In force Term ends Apr 6, 2030 · From the USPTO record	In force	Term ends Apr 6, 2030	From the USPTO record
US 8,679,344	Process for solvent shifting a nanoparticle dispersion In force Term ends Apr 26, 2030 · From the USPTO record	In force	Term ends Apr 26, 2030	From the USPTO record
US 9,415,373	Structured catalytic nanoparticles and method of preparation In force Term ends Apr 22, 2032 · From the USPTO record	In force	Term ends Apr 22, 2032	From the USPTO record
US 9,669,375	Method for production of stable cerium oxide organic colloids In force Term ends Jan 30, 2033 · From the USPTO record	In force	Term ends Jan 30, 2033	From the USPTO record
US 9,533,007	Nanoceria for the Treatment of Oxidative Stress In force Term ends Mar 15, 2033 · High confidence	In force	Term ends Mar 15, 2033	High confidence
US 9,962,406	Nanoceria for the Treatment of Oxidative Stress In force Term ends Mar 15, 2033 · High confidence	In force	Term ends Mar 15, 2033	High confidence

10 of 20 patents shown.

Pro members see all 20.

Pro members: see all 20 patents

Also on record, not counted in the 20: 8 lapsed for an unpaid fee. 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.

Export every term end as CSV · Pro

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.

1 no status recorded

List them