Lapsed Jun 15, 2025 on the fee record · High confidence
20-year base term ends Jan 3, 2031
First maintenance fee unpaid; grace period ended.
Held by Honeycomb Battery Company
Filed Jul 12, 2017 as application 15/648,016 · Granted Jun 15, 2021
Base term, 20 years from filing, plus 557 days of patent term adjustment (USPTO delay)
Today
Lapsed Jun 15, 2025
2011
2032
Clock starts
Jan 3, 2011
Jan 3, 2011
No longer in force
Jun 15, 2025
Jun 15, 2025
Granted
Jun 15, 2021
Jun 15, 2021
Term would have run to
Jul 13, 2032
Jul 13, 2032
base term
patent term adjustment
after the term ends
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
557
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
0 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.
8
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Jul 13, 2032: its 20-year base term plus 557 days of term adjustment for prosecution delay. 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 Jan 3, 2011, when application 12/930,294, the earliest non-provisional in its chain, was filed (this one was filed Jul 12, 2017) | Jan 3, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +557 days, USPTO patent term adjustment record | Jul 13, 2032 | 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 | 0 of 2 maintenance fees paid | lapsed Jun 15, 2025 | High confidence |
| Computed term end | The steps above, in order | Jun 15, 2025 | High confidence |
This family
| US 9,166,252 | In force no later than Oct 2031 | no later than Oct 2031 |
| US 8,859,143 | In force Oct 2032 | Oct 2032 |
| US 8,889,298 | In force Nov 2032 | Nov 2032 |
| Application PCT/US2011/064827 | PCT application no patent term | no patent term |
| US 10,326,168 | In force Aug 2033 | Aug 2033 |
| US 11,038,205 | this patent Jun 2025 | Jun 2025 |
| US 10,770,755 | In force Jan 2031 | Jan 2031 |
| US 11,189,859 | In force Jan 2031 | Jan 2031 |
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 |
|---|---|---|---|
| Aug 2, 2017 Reel 43167, frame 735 | Zhamu, Aruna; Jang, Bor Z | Nanotek Instruments, Inc. | Assignment of Assignor's Interest |
| Sep 20, 2019 Reel 50444, frame 315 | Nanotek Instruments, Inc. | Global Graphene Group, Inc. | Assignment of Assignor's Interest |
| Feb 23, 2025 Reel 70300, frame 321 | Global Graphene Group, Inc. | Honeycomb Battery Company | 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
Note
The 557 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
2
later US patents cite this one
That is above the median of utility patents granted in 2021 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.