One patent 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 May 2032. from the record
Of the 3 now held by other companies, 3 name Illinois Tool Works Inc. as their current owner. Each row says so.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
0
Ending by 2030
May 2032
Next term end
1
Patent families
When these terms end
Each bar runs from grant to computed term end. 2011 to 2032.
US 7,997,293
Valve Apparatus, Combination Filter Valve Assemblies and Devices, Systems, and Methods Includingthe Same
Aug 15, 2028
201520192023202720312032
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 1 of the currently held patents qualifies as notable.
Formerly held, still cited
Notable
Ends Aug 2028 · High confidence
The most cited patent in this portfolio, cited by 54 later US patents, top 25% of utility patents granted in 2011 in our data. Protection runs to 2028.
now held by Illinois Tool Works Inc.
Also notable
Ends Jan 2029 · High confidence
Cited by 23 later US patents, top 25% of utility patents granted in 2012 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2029.
now held by Illinois Tool Works Inc.
Also notable
Ends Feb 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 Illinois Tool Works Inc.
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.
What they patent
Grouped by real patent family, largest first, labeled by the earliest filing in each. No technology classification is inferred from titles.
| Filter, Especially Fuel Filter | 1 in force | to May 2032 |
Patents held now
Soonest term end first.
Showing 1 to 1 of 1
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 9,458,804 | Filter, Especially Fuel Filter held by Filtertek S.A. In force · High confidence | In force | High confidence |
Also on record, not counted in the 1: 3 patents in force now held by others · 15 patents ended · 6 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
2 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.