Also listed on Nanotek Instruments, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Apr 13, 2030 · High confidence
20-year base term ends Dec 4, 2028
Held by Samsung Electronics Co., Ltd.
Filed Dec 4, 2008 as application 12/315,555 · Granted Nov 12, 2013
Base term plus 495 days of patent term adjustment (USPTO delay)
Today
2008
2030
Clock starts
Dec 4, 2008
Dec 4, 2008
Term ends
Apr 13, 2030
Apr 13, 2030
Granted
Nov 12, 2013
Nov 12, 2013
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
495
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
3 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.
This patent's term runs 495 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 4, 2008, when this application, 12/315,555, was filed | Dec 4, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +495 days, USPTO patent term adjustment record | Apr 13, 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Apr 13, 2030 | High confidence |
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 |
|---|---|---|---|
| Sep 5, 2013 Reel 31144, frame 167 | Zhamu, Aruna; Jang, Bor Z.; Shi, Jinjun | Nanotek Instruments, Inc. | Assignment of Assignor's Interest |
| Jun 3, 2014 Reel 33014, frame 77 | Nanotek Instruments, Inc. | Samsung Electronics Co., Ltd. | Assignment of Assignor's Interest |
| Apr 13, 2016 Reel 38270, frame 176 | Shi, Jinjun | Nanotek Instruments, Inc. | Assignment of Assignor's Interest |
| Apr 19, 2016 Reel 38463, frame 95 | Zhamu, Aruna | Nanotek Instruments, Inc. | Assignment of Assignor's Interest |
| Apr 19, 2016 Reel 38464, frame 403 | Jang, Bor Z. | Nanotek Instruments, Inc. | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Apr 2030
Term ends Apr 13, 2030. No further fees fall due before then
Note
The 495 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
330
later US patents cite this one
That is top 1% of utility patents granted in 2013 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.