Lapsed Jan 8, 2025 on the fee record · High confidence
20-year base term ended Oct 30, 2026
Third maintenance fee unpaid; grace period ended.
Filed Dec 7, 2011 as application 13/313,442 · Granted Jan 8, 2013
Base term, 20 years from filing
Today
Lapsed Jan 8, 2025
2006
2026
Clock starts
Oct 30, 2006
Oct 30, 2006
No longer in force
Jan 8, 2025
Jan 8, 2025
Granted
Jan 8, 2013
Jan 8, 2013
Term would have run to
Oct 30, 2026
Oct 30, 2026
base term
after the term ends
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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,093,071, to Oct 30, 2026. The term already ends on or before that date, so the cap shortened nothing.
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.
3
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 Oct 30, 2026: its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 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 Oct 30, 2006, when application 11/554,354, the earliest non-provisional in its chain, was filed (this one was filed Dec 7, 2011) | Oct 30, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,093,071) | resolves to Oct 30, 2026, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 3 maintenance fees paid | lapsed Jan 8, 2025 | High confidence |
| Computed term end | The steps above, in order | Jan 8, 2025 | High confidence |
This family
| US 7,592,657 | In force Dec 2026 | Dec 2026 |
| US 8,093,071 | Lapsed on the fee record Jan 2024 | Jan 2024 |
| US 8,349,679 | this patent Jan 2025 | Jan 2025 |
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 |
|---|---|---|---|
| Sep 25, 2012 Reel 29022, frame 31 | Wang, Wensheng | Fujitsu Limited | Assignment of Assignor's Interest |
| Sep 26, 2012 Reel 29030, frame 399 | Fujitsu Limited | Fujitsu Microelectronics Limited | Assignment of Assignor's Interest |
| Sep 27, 2012 Reel 29045, frame 981 | Fujitsu Microelectronics Limited | Fujitsu Semiconductor Limited | Change of Name |
| Dec 23, 2016 Reel 41188, frame 401 | Fujitsu Semiconductor Limited | Fujitsu Semiconductor Limited | Change of Address |
| Jul 13, 2020 Reel 53195, frame 249 | Fujitsu Semiconductor Limited | Fujitsu Semiconductor Memory Solution Limited | 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.
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,093,071, ends no earlier than this term, so it caps nothing.
Citations
1
later US patent cites this one
That is below the median 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.