5 patents currently held
14 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 Sep 2033. from the record
Of the 14 now held by other companies, 6 name Compart Systems Pte Ltd. as their current owner, and 8 more name another party. Each row says which.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
0
Ending by 2030
Sep 2033
Next term end
4
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
Notable
Ends Jun 2036 · High confidence
Also notable
Ends May 2036 · High confidence
Also notable
Ends Jul 2036 · High confidence
Low Hysteresis Diaphragm for a Valve
US 10,113,665
The most cited patent in this portfolio, cited by 20 later US patents, top 25% of utility patents granted in 2018 in our data. Protection runs to 2036.
Valve Stroke Amplification Mechanism Assembly
US 10,006,556
Cited by 15 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 2036.
Control Plate in a Valve
US 10,527,177
The newest of the three, granted 2020. It anchors the portfolio to 2036, later than anything else here.
Formerly held, still cited
Notable
Ends Jun 2038 · High confidence
The newest of the three, granted 2019. It anchors the portfolio to 2038, later than anything else here.
now held by Illinois Tool Works Inc.
Also notable
Ends Apr 2035 · High confidence
Granted 2017 and renewed at every maintenance window due so far. Protection runs to 2035.
now held by Compart Systems Pte. Ltd.
Also notable
Ends Aug 2031 · High confidence
Renewed at every maintenance window since the 2013 grant; no more fees are due before its term ends in 2031.
now held by Compart Systems Pte, Ltd.
Fee deadlines
Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.
- 1 fee due Feb 18, 2027The maintenance fee for Ez-Seal Gasket for Joining Fluid Pathways (US 9,109,732) comes due Feb 18, 2027. Unpaid by Aug 18, 2027, it lapses early.
- 1 fee due Jul 7, 2027The maintenance fee for Control Plate in a Valve (US 10,527,177) comes due Jul 7, 2027. Unpaid by Jan 7, 2028, it lapses early.
Recent changes
Nothing was recorded against this company's patents in the last 90 days.
What they patent
The 2 largest of its 4 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Low Hysteresis Diaphragm for a Valve | 2 in force | to Jun 2036 |
| Control Plate in a Valve | 1 in force | to Jul 2036 |
Patents held now
Soonest term end first.
Showing 1 to 5 of 5
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 9,109,732 | Ez-Seal Gasket for Joining Fluid Pathways In force · High confidence | In force | High confidence | |
| US 10,006,556 | Valve Stroke Amplification Mechanism Assembly In force · High confidence | In force | High confidence | |
| US 10,281,056 | Low Hysteresis Diaphragm for a Valve In force · Medium confidence | In force | Medium confidence | |
| US 10,113,665 | Low Hysteresis Diaphragm for a Valve In force · High confidence | In force | High confidence | |
| US 10,527,177 | Control Plate in a Valve In force · High confidence | In force | High confidence |
Also on record, not counted in the 5: 14 patents in force now held by others · 1 patent ended · 3 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.