Collateral for a security interest recorded Jan 22, 2026 (JPMorgan Chase Bank, N.A.).
Term ends Dec 11, 2026 · High confidence
20-year base term ends Dec 11, 2026
Filed Sep 24, 2014 as application 14/495,327 · Granted Feb 2, 2016
Base term, 20 years from filing
Today
2006
2026
Clock starts
Dec 11, 2006
Dec 11, 2006
Term ends
Dec 11, 2026
Dec 11, 2026
Granted
Feb 2, 2016
Feb 2, 2016
base term
fee events
Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,877,671, to Dec 11, 2026. The term already ends on or before that date, so the cap shortened nothing.
2 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
3
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
This patent's term is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 2 of 2 maintenance fees are paid so far. Confidence: High. from the record
How we calculated this date
One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Dec 11, 2006, when application PCT/US2006/046947, the earliest non-provisional in its chain, was filed (this one was filed Sep 24, 2014) | Dec 11, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,877,671) | resolves to Dec 11, 2026, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 11, 2026 | High confidence |
This family
| US 8,877,671 | Grace period ended Dec 2026 | Dec 2026 |
| US 9,248,438 | this patent Dec 2026 | Dec 2026 |
2 of 3 applications in this family shown, earliest filings first. The applications whose file history this site holds. The family may have others.
Assignments
Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Jun 3, 2015 Reel 35775, frame 559 | Radlowski, Cecelia A.; Malick, Gill M.; Miedona, Colleen T. | Advanced Refining Technologies LLC | Assignment of Assignor's Interest |
| Jan 22, 2026 Reel 74475, frame 514 | W. R. Grace & Co.-Conn.; Advanced Refining Technologies LLC | JPMorgan Chase Bank, N.A., as Collateral Agent | Security Interest (Supplemental No. 3) |
| Jan 23, 2026 Reel 74503, frame 861 | W. R. Grace & Co.-Conn.; Advanced Refining Technologies LLC | Wilmington Trust, National Association | Supplement No. 1 to Patent Security Agreement |
| Jan 23, 2026 Reel 74503, frame 898 | W. R. Grace & Co.-Conn.; Advanced Refining Technologies LLC | Wilmington Trust, National Association | Supplement No. 3 to Patent Security Agreement |
| Jan 29, 2026 Reel 74532, frame 229 | W. R. Grace & Co.-Conn.; Advanced Refining Technologies LLC | Wilmington Trust, National Association, as Notes Collateral Agent | Notes Security Interest |
| Feb 2, 2026 Reel 74612, frame 540 | Wilmington Trust, National Association | W. R. Grace & Co.-Conn.; Advanced Refining Technologies LLC | Release of Security Interest Supplement No. 3 |
| Feb 2, 2026 reel/frame not recorded | Wilmington Trust, National Association | W. R. Grace & Co.-Conn. | Release of Security Interest Supplement No. 3 |
| Feb 2, 2026 reel/frame not recorded | Wilmington Trust, National Association | Advanced Refining Technologies LLC | Release of Security Interest Supplement No. 3 |
Sources
Google Patents · The patent document at USPTO · Assignment records at USPTO
USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup
Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.
What's changing
Dec 2026
Term ends Dec 11, 2026. No further fees fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,877,671, ends no earlier than this term, so it caps nothing.
Citations
4
later US patents cite this one
That is below the median of utility patents granted in 2016 in our data, the only group it is compared against.
How we rank
Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.