Also listed on Apollo Precision (Kunming) Yuanhong Limited, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Dec 19, 2030 · High confidence
20-year base term ends Mar 20, 2028
Filed Mar 20, 2008 as application 12/052,476 · Granted Dec 16, 2014
Base term plus 1004 days of patent term adjustment (USPTO delay)
Today
2008
2030
Clock starts
Mar 20, 2008
Mar 20, 2008
Term ends
Dec 19, 2030
Dec 19, 2030
Granted
Dec 16, 2014
Dec 16, 2014
base term
patent term adjustment
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
1,004
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.
8
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 runs 1004 days past its 20-year base term on prosecution delay. 2 of 3 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 Mar 20, 2008, when this application, 12/052,476, was filed | Mar 20, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1004 days, USPTO patent term adjustment record | Dec 19, 2030 | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 19, 2030 | High confidence |
This family
| US 8,912,429 | this patent Dec 2030 | Dec 2030 |
| Application PCT/US2009/035486 | PCT application no patent term | no patent term |
| Application 12/566,555 | Abandoned not computed | not computed |
| Application 13/085,274 | Abandoned not computed | not computed |
| Application 13/087,724 | Abandoned not computed | not computed |
| US 9,620,660 | Lapsed on the fee record Apr 2025 | Apr 2025 |
| US 10,158,031 | In force Oct 2029 | Oct 2029 |
| US 10,056,521 | In force Mar 2028 | Mar 2028 |
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 |
|---|---|---|---|
| Mar 20, 2008 Reel 20682, frame 366 | Wudu, Mulugeta Zerfu; Corneille, Jason Stephen; Croft, Steven Thomas; Flanders, Steven Douglas; McColl, William James | Miasole | Assignment of Assignor's Interest |
| Aug 28, 2012 Reel 28863, frame 887 | Miasole | Pinnacle Ventures, L.l.c. | Security Agreement |
| Jan 7, 2013 Reel 29579, frame 494 | Pinnacle Ventures, L.l.c. | Miasole | Release of Security Interest |
| Jan 27, 2014 Reel 32127, frame 428 | Miasolé | Hanergy Holding Group Ltd. | Confirmatory Assignment of Patent Rights |
| Jan 30, 2015 Reel 34857, frame 380 | Hanergy Holding Group Ltd. | Apollo Precision (Kunming) Yuanhong Limited | Assignment of Assignor's Interest |
| Mar 4, 2016 Reel 37896, frame 10 | Apollo Precision (Kunming) Yuanhong Limited | Beijing Apollo Ding Rong Solar Technology Co., Ltd. | Assignment of Assignor's Interest |
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 2030
Term ends Dec 19, 2030.
Note
The 1004 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
29
later US patents cite this one
That is top 25% of utility patents granted in 2014 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.