Redisem Ltd.

9 patents currently held · Updated Nov 14, 2026

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

Ending by 2030

Mar 2031

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 Feb 27, 2027
The maintenance fee for Power converter measuring the average rectified primary current (US 10,396,669) comes due Feb 27, 2027. Unpaid by Aug 27, 2027, it lapses early.
1 fee due Jun 22, 2027
The maintenance fee for Bipolar power control (US 9,219,428) comes due Jun 22, 2027. Unpaid by Dec 22, 2027, 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.

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.

Showing 1 to 9 of 9

Patent	Title	Status	Expires	Confidence
US 10,396,669	Power converter measuring the average rectified primary current In force Term ends Mar 24, 2031 · From the USPTO record	In force	Term ends Mar 24, 2031	From the USPTO record
US 9,647,567	Regulating controller for controlled self-oscillating converters using bipolar junction transistors In force Term ends Sep 13, 2031 · From the USPTO record	In force	Term ends Sep 13, 2031	From the USPTO record
US 9,219,428	Bipolar power control In force Term ends May 15, 2032 · From the USPTO record	In force	Term ends May 15, 2032	From the USPTO record
US 10,103,631	Power converter circuit and method thereof In force Term ends Mar 24, 2034 · From the USPTO record	In force	Term ends Mar 24, 2034	From the USPTO record
US 10,658,932	Power Control Circuit In force Term ends Jan 5, 2036 · High confidence	In force	Term ends Jan 5, 2036	High confidence
US 12,341,416	Controller for power converter In force Term ends Feb 23, 2040 · From the USPTO record	In force	Term ends Feb 23, 2040	From the USPTO record
US 12,513,800	Power converter and method of converting power In force Term ends Apr 24, 2040 · From the USPTO record	In force	Term ends Apr 24, 2040	From the USPTO record
US 12,273,019	Controller for a power converter having an inverter frequency controlled by a switch control signal In force Term ends May 31, 2040 · From the USPTO record	In force	Term ends May 31, 2040	From the USPTO record
US 12,438,451	Power converter, controller, and methods In force Term ends Oct 27, 2040 · From the USPTO record	In force	Term ends Oct 27, 2040	From the USPTO record

Also on record, not counted in the 9: 1 lapsed for an unpaid fee. 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.

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Published applications

US patent applications published under this name that have not become patents. An application is published about eighteen months after its earliest filing; one that has not been published is in no public record.

1 abandoned

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