The record carries a change of name from this company to Lapis Semiconductor Co., Ltd., 1,760 recordings between Dec 8, 2011 and May 14, 2020. This page keeps the records filed under this name.
1 patent currently held
190 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.
1 more record may belong here and awaits a decision; it is not counted.
The next term ends in Mar 2030. from the record
Of the 190 now held by other companies, 160 name Lapis Semiconductor Co. Ltd. as their current owner, and 30 more name another party. Each row says which.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
1
Ending by 2030
Mar 2030
Next term end
1
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 1 of the currently held patents qualifies as notable.
Formerly held, still cited
Notable
Ends Sep 2030 · High confidence
Cited by 23 later US patents, top 25% of utility patents granted in 2018 in our data, and renewed at every maintenance window due so far. Protection runs to 2030.
now held by Taiwan Semiconductor Manufacturing Company, Ltd.
Also notable
Ends Dec 2026 · High confidence
Renewed at every maintenance window since the 2010 grant; no more fees are due before its term ends in 2026.
now held by Taiwan Semiconductor Manufacturing Company, Ltd.
Also notable
Ends Mar 2028 · High confidence
Renewed at every maintenance window since the 2014 grant; no more fees are due before its term ends in 2028. A terminal disclaimer caps this term to an earlier patent's.
now held by Lapis Semiconductor Co., Ltd.
Fee deadlines
No maintenance fee falls due on this company's record before Nov 10, 2027.
Recent changes
- 24 terms have ended since Aug 16, 2026
Patents held now
Soonest term end first.
Showing 1 to 1 of 1
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,785,237 | Method of Forming Variable Resistance Memory Device In force · High confidence | In force | High confidence |
Also on record, not counted in the 1: 190 patents in force now held by others · 2,142 patents ended · 1 application pending · 368 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.
1 patents carry no fee events. That is a gap in the record, not evidence of lapse, so status falls back to the computed term
29 terminal disclaimers are on file with no resolved reference. No cap is applied and none is guessed