4 patents currently held
8 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.
2 more records may belong here and await a decision; they are not counted.
The next term ends in Jan 2029. from the record
Of the 8 now held by other companies, 8 name Stryten Manufacturing LLC as their current owner. Each row says so.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
3
Ending by 2030
Jan 2029
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 Feb 2035 · High confidence
Also notable
Ends Apr 2029 · High confidence
Also notable
Ends Dec 2029 · High confidence
Composition That Enhances Deep Cycle Performance of Valve-Regulated Lead-Acid Batteries Filled with Gel Electrolyte
US 10,014,520
Granted 2018 and renewed at every maintenance window due so far. Protection runs to 2035.
Pole Bridge for a Battery
US 8,119,282
Renewed at every maintenance window since the 2012 grant; no more fees are due before its term ends in 2029.
Vent Valve for Acid Batteries
US 7,951,475
Renewed at every maintenance window since the 2011 grant; no more fees are due before its term ends in 2029.
Formerly held, still cited
Notable
Ends Jun 2032 · High confidence
Renewed at every maintenance window since the 2014 grant; no more fees are due before its term ends in 2032.
now held by Stryten Manufacturing LLC
Also notable
Ends Dec 2032 · High confidence
Granted 2020. Computed term ends 2032.
now held by Stryten Manufacturing LLC
Also notable
Ends Mar 2034 · High confidence
Granted 2019. Computed term ends 2034.
now held by Stryten Manufacturing LLC
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
The 1 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.
| Pole Bridge for a Battery | 1 in force | to Apr 2029 |
Patents held now
Soonest term end first.
Showing 1 to 4 of 4
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,736,798 | Lid for Batteries and a Battery Including the Lid In force · High confidence | In force | High confidence | |
| US 8,119,282 | Pole Bridge for a Battery In force · High confidence | In force | High confidence | |
| US 7,951,475 | Vent Valve for Acid Batteries In force · High confidence | In force | High confidence | |
| US 10,014,520 | Composition That Enhances Deep Cycle Performance of Valve-Regulated Lead-Acid Batteries Filled with Gel Electrolyte held by Exide Technologies, LLC In force · High confidence | In force | High confidence |
Also on record, not counted in the 4: 8 patents in force now held by others · 17 patents ended · 13 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.