2 patents currently held
16 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.
27 more records may belong here and await a decision; they are not counted.
The next term ends in Jan 2034. from the record
Of the 16 now held by other companies, 16 name Beijing Apollo Ding Rong Solar Technology Co. Ltd. as their current owner. Each row says so.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
0
Ending by 2030
Jan 2034
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 2037 · High confidence
Also notable
Ends Jan 2034 · High confidence
Ignitor, System and Method of Electrical Ignition of Exothermic Mixture
US 10,883,329
The most cited patent in this portfolio, cited by 8 later US patents, top 25% of utility patents granted in 2021 in our data. Protection runs to 2037.
Photovoltaic Cell with High Efficiency Cigs Absorber Layer with Low Minority Carrier Lifetime and Method of Making Thereof
US 10,043,921
Granted 2018 and renewed at every maintenance window due so far. Protection runs to 2034.
Formerly held, still cited
Notable
Ends May 2029 · High confidence
Cited by 34 later US patents, top 25% of utility patents granted in 2011 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2029.
Also notable
Ends Dec 2030 · High confidence
Cited by 29 later US patents, top 25% of utility patents granted in 2014 in our data, and renewed at every maintenance window due so far. Protection runs to 2030.
Also notable
Ends May 2029 · High confidence
Cited by 32 later US patents, top 25% of utility patents granted in 2010 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2029.
Fee deadlines
No maintenance fee falls due on this company's record before Nov 10, 2027.
Recent changes
Nothing was recorded against this company's patents in the last 90 days.
What they patent
Grouped by real patent family, largest first, labeled by the earliest filing in each. No technology classification is inferred from titles.
Patents held now
Soonest term end first.
Showing 1 to 2 of 2
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 10,043,921 | Photovoltaic Cell with High Efficiency Cigs Absorber Layer with Low Minority Carrier Lifetime and Method of Making Thereof In force · High confidence | In force | High confidence | |
| US 10,883,329 | Ignitor, System and Method of Electrical Ignition of Exothermic Mixture In force · High confidence | In force | High confidence |
Also on record, not counted in the 2: 16 patents in force now held by others · 61 patents ended · 68 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.
4 terminal disclaimers are on file with no resolved reference. No cap is applied and none is guessed