2 patents currently held
283 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.
5 more records may belong here and await a decision; they are not counted.
The next term ends in Jul 2031. from the record
Of the 283 now held by other companies, 88 name Metali LLC as their current owner, and 195 more name another party. Each row says which.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
0
Ending by 2030
Jul 2031
Next term end
2
Patent families
When these terms end
Held patents by the year their term ends
notable patents
all others
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
Notable: the highest-ranked patents in this portfolio by citations and family size.
Notable patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Only 2 of the currently held patents qualify as notable.
Notable
Ends Aug 2036 · High confidence
Also notable
Ends Jul 2031 · High confidence
Method, system, and apparatus for the thermal storage of nuclear reactor generated energy
US 10,535,437
Granted 2020. Computed term ends 2036.
Method and system for providing fuel in a nuclear reactor
US 9,899,106
The largest patent family in this portfolio, 14 related applications, renewed at every maintenance window due so far. Protection runs to 2031.
Formerly held, still cited
Notable
Ends Nov 2030 · High confidence
Cited by 532 later US patents, top 1% of utility patents granted in 2012 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2030.
now held by Metali, LLC
Also notable
Ends Sep 2030 · High confidence
Cited by 128 later US patents, top 5% of utility patents granted in 2016 in our data, and renewed at every maintenance window due so far. Protection runs to 2030.
now held by Uber Technologies, Inc.
Also notable
Ends May 2029 · Medium confidence
Cited by 291 later US patents, top 5% of utility patents granted in 2011 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2029. A terminal disclaimer caps this term to an earlier patent's.
now held by Freede Solutions, Inc.
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.
- 1 fee due Jul 14, 2027The maintenance fee for Method, system, and apparatus for the thermal storage of nuclear reactor generated energy (US 10,535,437) comes due Jul 14, 2027. Unpaid by Jan 14, 2028, it lapses early.
Recent changes
- 12 terms have ended since Aug 16, 2026
What they patent
Grouped by real patent family, largest first, labeled by the earliest filing in each. No technology classification is inferred from titles.
| Method, system, and apparatus for the thermal storage of nuclear reactor generated energy | 1 in force | to Aug 2036 |
| Method and system for providing fuel in a nuclear reactor | 1 in force | to Jul 2031 |
Patents held now
Soonest term end first.
Showing 1 to 2 of 2
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 9,899,106 | Method and system for providing fuel in a nuclear reactor In force · High confidence | In force | High confidence | |
| US 10,535,437 | Method, system, and apparatus for the thermal storage of nuclear reactor generated energy held by Terrapower, LLC In force · High confidence | In force | High confidence |
Also on record, not counted in the 2: 283 patents in force now held by others · 1,099 patents ended · 950 applications abandoned. List them
Sources and methods
Compiled from USPTO application file histories, grants and recorded assignments, with the company's own names reviewed by hand. How this record was built
Portfolio grouped automatically from ownership conveyances to the names matched to this company, usually every name that begins with its own, so it counts patents an affiliate holds; each list row names the holder of record. Security interests are excluded and ambiguous records are not reviewed by hand.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
181 terminal disclaimers are on file with no resolved reference. No cap is applied and none is guessed