Two patents currently held, every record listed here
4 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 Sep 2027. from the record
Of the 4 now held by other companies, 4 name Taiwan Semiconductor Manufacturing Co. Ltd. as their current owner. Each row says so.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
2
Ending by 2030
Sep 2027
Next term end
2
Patent families
When these terms end
Each bar runs from grant to computed term end. 2009 to 2029.
US 7,519,224
Method and Apparatus for Compensating Data Image Reproduced from Holographic System
Jun 23, 2027
US 7,580,173
Optical Information Detecting Method and Optical Information Detector
no later than Aug 1, 2027
US 7,570,838
Image Correction Method for Compensating for Misalignment of Pixels in Holographic Digital Data Storage System
Aug 9, 2027
US 8,301,959
Apparatus and Method for Processing Beam Information Using Low Density Parity Check Code
Sep 13, 2029
20132017202120252029
A dotted end marks a recorded terminal disclaimer this site has not resolved: the term can only be shorter than the bar, never longer.
Every computed term in this portfolio is shown above.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 patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Only 2 of the currently held patents qualify as notable.
Notable
Ends Sep 2027 · High confidence
Also notable
Ends Dec 2027 · High confidence
Drum Washer
US D690,061
Granted 2013. Computed term ends 2027.
Drum Washer
US D695,979
Granted 2013. Computed term ends 2027.
Formerly held, still cited
Notable
Ends Sep 2029 · High confidence
Renewed at every maintenance window since the 2012 grant; no more fees are due before its term ends in 2029.
now held by Taiwan Semiconductor Manufacturing Co., Ltd.
Fee deadlines
No maintenance fee falls due on this company's record before Nov 10, 2027.
Recent changes
Nothing was recorded against this company's patents in the last 90 days.
Patents held now
Soonest term end first.
Showing 1 to 2 of 2
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US D690,061 | Drum Washer In force · High confidence | In force | High confidence | |
| US D695,979 | Drum Washer In force · High confidence | In force | High confidence |
Also on record, not counted in the 2: 4 patents in force now held by others · 119 patents ended · 131 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.
5 terminal disclaimers are on file with no resolved reference. No cap is applied and none is guessed
4 computed term dates come from a chain with an unresolved parent. A continuity parent has not yet been fetched from USPTO's records. The term is dated from this application's own claim; no earlier date is assumed until the parent is resolved.