Vacuum Interrupters, LLC

11 patents currently held · Updated Nov 14, 2026

1 more in force is now held by another company

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

Ending by 2030

Apr 2032

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 21, 2027
The maintenance fee for Portable Circuit Breaker Test and Control System (US 9,086,447) comes due Jan 21, 2027. Unpaid by Jul 21, 2027, it lapses early.
1 fee due Aug 18, 2027
The maintenance fee for Method for Reconditioning of Vacuum Interrupters (US 10,566,158) comes due Aug 18, 2027. Unpaid by Feb 18, 2028, it lapses early.
1 fee due Nov 10, 2027
The maintenance fee for Flexible Magnetic Field Coil for Measuring Ionic Quantity (US 9,335,378) comes due Nov 10, 2027. Unpaid by May 10, 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.

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 9,759,773	System and Method to Predict a Usable Life of a Vacuum Interrupter in the Field In force Term ends Apr 25, 2032 · Medium confidence	In force	Term ends Apr 25, 2032	Medium confidence
US 9,797,865	Electromagnetic Test Device to Predict a Usable Life of a Vacuum Interrupter in the Field In force Term ends Apr 25, 2032 · Medium confidence	In force	Term ends Apr 25, 2032	Medium confidence
US 9,952,178	Method to Predict a Usable Life of a Vacuum Interrupter in the Field In force Term ends Apr 25, 2032 · Medium confidence	In force	Term ends Apr 25, 2032	Medium confidence
US 10,036,727	System and Method to Predict a Usable Life of a Vacuum Interrupter in the Field In force Term ends Apr 25, 2032 · High confidence	In force	Term ends Apr 25, 2032	High confidence
US 9,335,378	Flexible Magnetic Field Coil for Measuring Ionic Quantity In force Term ends Nov 22, 2032 · High confidence	In force	Term ends Nov 22, 2032	High confidence
US 9,026,375	Method to Predict a Usable Life of a Vacuum Interrupter in the Field In force Ends no later than Jun 10, 2033 · Medium confidence	In force	Ends no later than Jun 10, 2033	Medium confidence
US 9,031,795	Electromagnetic Test Device to Predict a Usable Life of a Vacuum Interrupter in the Field In force Ends no later than Jun 19, 2033 · Medium confidence	In force	Ends no later than Jun 19, 2033	Medium confidence
US 9,086,447	Portable Circuit Breaker Test and Control System In force Term ends Sep 17, 2034 · High confidence	In force	Term ends Sep 17, 2034	High confidence
US 10,712,312	Flexible Magnetic Field Coil for Measuring Ionic Quantity In force Ends no later than Oct 23, 2034 · Medium confidence	In force	Ends no later than Oct 23, 2034	Medium confidence
US 10,566,158	Method for Reconditioning of Vacuum Interrupters In force Term ends Dec 12, 2038 · High confidence	In force	Term ends Dec 12, 2038	High confidence

10 of 11 patents shown.

Pro members see all 11.

Pro members: see all 11 patents

Also on record, not counted in the 11: 1 patent in force now held by others. 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

Every application published under this name has become a patent.