1 patent currently held
25 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 Nov 2032. from the record
Of the 25 now held by other companies, 25 name Watlow Electric Manufacturing Company 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
Nov 2032
Next term end
1
Patent families
When these terms end
Held patents by the year their term ends
notable patents
all others
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 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
Only 1 of the currently held patents qualifies as notable.
Formerly held, still cited
Notable
Ends Jun 2036 · High confidence
The most cited patent in this portfolio, cited by 531 later US patents, top 1% of utility patents granted in 2018 in our data. Protection runs to 2036.
now held by Watlow Electric Manufacturing Company
Also notable
Ends Jul 2032 · High confidence
Cited by 22 later US patents, top 25% of utility patents granted in 2015 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2032.
now held by Watlow Electric Manufacturing Company
Also notable
Ends Apr 2037 · High confidence
The newest of the three, granted 2019. It anchors the portfolio to 2037, later than anything else here.
now held by Watlow Electric Manufacturing Company
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.
| Multi-Layer Ceramic Plate Device | 1 in force | to Nov 2032 |
Patents held now
Soonest term end first.
Showing 1 to 1 of 1
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 12,558,734 | Multi-Layer Ceramic Plate Device In force · High confidence | In force | High confidence |
Also on record, not counted in the 1: 25 patents in force now held by others · 1 patent ended · 10 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 terminal disclaimer is on file with no resolved reference. No cap is applied and none is guessed