Danfoss Drives Oy

57 patents currently held · Updated Nov 15, 2026

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

Previously recorded as Vacon Oyj (to 2024)

Ending by 2030

Mar 2028

Next term end

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

20262027202820292030203120322033203420352036203720382039204020412042204320442045

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 Jan 30, 2027
The maintenance fee for Arrangement for fastening a power electronic device such as a frequency converter (US 10,364,863) comes due Jan 30, 2027. Unpaid by Jul 30, 2027, it lapses early.
2 fees due Apr 1, 2027
1 fee due Jun 1, 2027
The maintenance fee for Power electronics device and its cooling arrangement (US 9,204,579) comes due Jun 1, 2027. Unpaid by Dec 1, 2027, it lapses early.
1 fee due Sep 8, 2027
The maintenance fee for Power electronics device (US 9,282,677) comes due Sep 8, 2027. Unpaid by Mar 8, 2028, it lapses early.
2 fees due Oct 2 to 21, 2027 · next Oct 2

Which patents, and when each one lapses · Pro

Recent changes

1 of the patents on this record was granted since Aug 17, 2026

Patents held now

Soonest term end first. Each date below is computed on that patent's own page, which shows the rule, the adjustments and the fee history it was derived from.

Patent	Title	Status	Expires	Confidence
US 7,839,251	Filtering choke arrangement for a frequency converter In force Term ends Mar 22, 2028 · From the USPTO record	In force	Term ends Mar 22, 2028	From the USPTO record
US D706,216	Frequency converter In force Term ends Jun 3, 2028 · From the USPTO record	In force	Term ends Jun 3, 2028	From the USPTO record
US 7,773,396	Parallel connection of inverters In force Term ends Jun 15, 2028 · From the USPTO record	In force	Term ends Jun 15, 2028	From the USPTO record
US 7,847,663	Filtering choke arrangement In force Term ends Jul 25, 2028 · From the USPTO record	In force	Term ends Jul 25, 2028	From the USPTO record
US D713,336	Frequency converter In force Term ends Sep 16, 2028 · From the USPTO record	In force	Term ends Sep 16, 2028	From the USPTO record
US 7,881,045	Enclosure of a power electronics appliance In force Term ends Sep 24, 2028 · From the USPTO record	In force	Term ends Sep 24, 2028	From the USPTO record
US 7,928,679	Protection arrangement of an electric motor In force Term ends Mar 20, 2029 · From the USPTO record	In force	Term ends Mar 20, 2029	From the USPTO record
US 7,902,956	Filtering choke arrangement In force Term ends Apr 18, 2029 · From the USPTO record	In force	Term ends Apr 18, 2029	From the USPTO record
US 7,872,885	Power level balance of frequency converters connected in parallel In force Term ends Jun 6, 2029 · From the USPTO record	In force	Term ends Jun 6, 2029	From the USPTO record
US D773,993	Frequency converter In force Term ends Dec 13, 2030 · From the USPTO record	In force	Term ends Dec 13, 2030	From the USPTO record

10 of 57 patents shown.

Pro members see all 57.

Pro members: see all 57 patents

Also on record, not counted in the 57: 11 ended at full term. List them

Sources and methods

Compiled from the USPTO record, grants, published applications and recorded assignments, not yet reviewed by hand. How this record was built

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

Published applications

Every application published under this name has become a patent.