Two patents currently held, every record listed here
3 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.
The next term ends in Dec 2028. from the record
Of the 3 now held by other companies, 3 name Waters Technologies Corporation as their current owner. Each row says so.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
1
Ending by 2030
Dec 2028
Next term end
2
Patent families
When these terms end
Each bar runs from grant to computed term end. 2010 to 2033.20152020202520302033
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 Feb 2033 · High confidence
Also notable
Ends Dec 2028 · High confidence
Time delay for sample collection in chromatography systems
US 8,877,051
Renewed at every maintenance window since the 2014 grant; no more fees are due before its term ends in 2033.
De-Pressurization Scheme for Chromatography Columns
US 7,670,487
Renewed at every maintenance window since the 2010 grant; no more fees are due before its term ends in 2028.
Formerly held, still cited
Notable
Ends Aug 2028 · High confidence
Renewed at every maintenance window since the 2011 grant; no more fees are due before its term ends in 2028.
now held by Waters Technologies Corporation
Also notable
Ends Sep 2029 · High confidence
Renewed at every maintenance window since the 2011 grant; no more fees are due before its term ends in 2029.
now held by Waters Technologies Corporation
Also notable
Ends Nov 2030 · High confidence
Granted 2015 and renewed at every maintenance window due so far. Protection runs to 2030.
now held by Waters Technologies Corporation
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 7,670,487 | De-Pressurization Scheme for Chromatography Columns In force · High confidence | In force | High confidence | |
| US 8,877,051 | Time delay for sample collection in chromatography systems In force · High confidence | In force | High confidence |
Also on record, not counted in the 2: 3 patents in force now held by others · 13 patents ended · 7 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.
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.