20 patents currently held

Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.

The next term ends in Oct 2038. from the record

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

Oct 2038

Next term end

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

202620272028202920302031203220332034203520362037203820392040 204120422043 2044 2045

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

Electric Vehicle Battery Charger US 10,759,287

The most cited patent in this portfolio, cited by 26 later US patents, top 10% of utility patents granted in 2020 in our data. Protection runs to 2038.

Ends Oct 2038 · High confidence Also notable

Converter with Power Management System for Household Users to Manage Power Between Different Loads Including Their Electric Vehicle US 11,689,118

Cited by 4 later US patents, top 25% of utility patents granted in 2023 in our data. Protection runs to 2040.

Ends Jun 2040 · High confidence Also notable

Isolated Converter US 11,811,300

The newest of the three, granted 2023. It anchors the portfolio to 2040, later than anything else here.

Ends Nov 2040 · High confidence

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 Dec 27, 2026
The maintenance fee for Converter with Power Management System for Household Users to Manage Power Between Different Loads Including Their Electric Vehicle (US 11,689,118) comes due Dec 27, 2026. Unpaid by Jun 28, 2027, it lapses early.
2 fees due May 7 to 28, 2027 · next May 7
1 fee due Sep 5, 2027
The maintenance fee for Photovoltaic Rapid Shutdown and Arc Sensing System (US 11,923,671) comes due Sep 5, 2027. Unpaid by Mar 6, 2028, it lapses early.
1 fee due Oct 2, 2027
The maintenance fee for Multiple Port Power Converter Device (US 11,949,342) comes due Oct 2, 2027. Unpaid by Apr 3, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

Nothing was recorded against this company's patents in the last 90 days.

What they patent

The 5 largest of its 13 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Electric Vehicle Battery Charger	4 in force	to Dec 2038
Photovoltaic Rapid Shutdown and Arc Sensing System	3 in force	to Apr 2043
Cooling System for Use in Power Converters	2 in force	to Sep 2040
Converter with Power Management System for Household Users to Manage Power Between Different Loads Including Their Electric Vehicle	2 in force	to Jun 2040
Bidirectional Split-Phase Power Converter for Electric Vehicle Charging	1 in force	to Sep 2045

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 10,759,287	Electric Vehicle Battery Charger In force Term ends Oct 12, 2038 · High confidence	In force	Term ends Oct 12, 2038	High confidence
US 12,115,870	Electric Vehicle Battery Charger In force Term ends Oct 12, 2038 · Medium confidence	In force	Term ends Oct 12, 2038	Medium confidence
US 12,012,007	Electric Vehicle Battery Charger In force Term ends Oct 29, 2038 · Medium confidence	In force	Term ends Oct 29, 2038	Medium confidence
US 11,273,718	Electric Vehicle Battery Charger In force Term ends Dec 29, 2038 · Medium confidence	In force	Term ends Dec 29, 2038	Medium confidence
US 12,301,136	Cooling System for Use in Power Converters In force Term ends Mar 17, 2040 · High confidence	In force	Term ends Mar 17, 2040	High confidence
US 12,132,418	Converter with Power Management System for Household Users to Manage Power Between Different Loads Including Their Electric Vehicle In force Term ends Mar 19, 2040 · Low confidence	In force	Term ends Mar 19, 2040	Low confidence
US 11,949,342	Multiple Port Power Converter Device In force Term ends May 24, 2040 · High confidence	In force	Term ends May 24, 2040	High confidence
US 11,689,118	Converter with Power Management System for Household Users to Manage Power Between Different Loads Including Their Electric Vehicle In force Term ends Jun 8, 2040 · High confidence	In force	Term ends Jun 8, 2040	High confidence
US 12,015,357	Cooling System for Use in Power Converters In force Term ends Sep 19, 2040 · High confidence	In force	Term ends Sep 19, 2040	High confidence
US 11,811,300	Isolated Converter In force Term ends Nov 19, 2040 · High confidence	In force	Term ends Nov 19, 2040	High confidence

10 of 20 patents shown.

Pro members see all 20.

Pro members: see all 20 patents

Also on record, not counted in the 20: 4 applications pending · 1 application 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.

Export every term end as CSV · Pro

Dcbel Inc.