32 patents currently held

18 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.

39 more records may belong here and await a decision; they are not counted.

The next term ends in Jan 2029. from the record

Of the 18 now held by other companies, 8 name Empyrean Medical Systems Inc. as their current owner, and 10 more name another party. Each row says which.

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

Jan 2029

Next term end

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

2026202720282029 2030 2031 2032 2033 203420352036 2037 2038 2039 2040 20412042204320442045

notable patents fee due within 90 days 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. Fee due within 90 days: a maintenance fee is due within 90 days of when this page was computed and not yet paid.

Notable patents

Ranked by citations and family size, against patents of the same kind granted the same year. How we rank

Notable

Method and Apparatus for Controlling Gas Flow via a Gas Shut-Off Valve Assembly US 8,701,703

Cited by 20 later US patents, top 25% of utility patents granted in 2014 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2032.

Ends Mar 2032 · High confidence Also notable

Identifying the Operation of a Specified Type of Appliance US 9,176,192

Cited by 30 later US patents, top 25% of utility patents granted in 2015 in our data, and renewed at every maintenance window due so far. Protection runs to 2031.

Ends Dec 2031 · High confidence Also notable

Electromagnetic Flow Sensor US 11,054,291

Cited by 14 later US patents, top 25% of utility patents granted in 2021 in our data. Protection runs to 2037.

Ends Sep 2037 · High confidence

Formerly held, still cited

Notable

Real-Time X-Ray Dosimetry in Intraoperative Radiation Therapy US 11,045,667

Cited by 44 later US patents, top 5% of utility patents granted in 2021 in our data. Protection runs to 2039.

now held by Empyrean Medical Systems, Inc.

Ends Aug 2039 · High confidence

Also notable

Split-Ring Gland Pipe Coupling with Corrugated Armor US 8,864,181

Cited by 45 later US patents, top 25% of utility patents granted in 2014 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2032.

now held by Sensus Spectrum, LLC

Ends Apr 2032 · 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 Nov 16, 2026
The maintenance fee for Ultrasonic Meter Including One or More Pairs of Ultrasonic Transducers and Two or More Protrusions Arranged to Exclude Fluid from Non-Sampled Volumes (US 11,650,087) comes due Nov 16, 2026. Unpaid by May 17, 2027, it lapses early.
1 fee due Dec 9, 2026
The maintenance fee for Method and Apparatus for Preventing Electricity Meter Failure (US 9,052,351) comes due Dec 9, 2026. Unpaid by Jun 9, 2027, it lapses early.
2 fees due Apr 6 to 10, 2027 · next Apr 6
2 fees due May 3 to 10, 2027 · next May 3
1 fee due Jun 30, 2027
The maintenance fee for Thickness-Planar Mode Transducers and Related Devices (US 10,518,293) comes due Jun 30, 2027. Unpaid by Jan 3, 2028, it lapses early.
1 fee due Jul 2, 2027
The maintenance fee for Mutual Inductance-Type Current Sensing (US 11,860,198) comes due Jul 2, 2027. Unpaid by Jan 3, 2028, it lapses early.
2 fees due Aug 2 to 16, 2027 · next Aug 2
2 fees due Oct 21 to 28, 2027 · next Oct 21

Which patents, and when each one lapses · Pro

Recent changes

1 term has ended since Aug 16, 2026

What they patent

The 5 largest of its 30 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Method and Apparatus for Controlling Gas Flow via a Gas Shut-Off Valve Assembly	3 in force	to Mar 2032
Electrode Assembly	1 in force	to Oct 2041
Electricity meter	1 in force	to Sep 2041
Electricity Meter	1 in force	to Jul 2041
Mutual Inductance-Type Current Sensing	1 in force	to Dec 2040

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 8,378,662	Current Sensor held by Sensus Spectrum LLC and Sensus USA Inc. In force Term ends Jan 21, 2029 · High confidence	In force	Term ends Jan 21, 2029	High confidence
US 8,006,569	Magnetic Flow Meter In force Term ends Sep 26, 2029 · High confidence	In force	Term ends Sep 26, 2029	High confidence
US 9,182,052	Method and Apparatus for Controlling Gas Flow via a Gas Shut-Off Valve Assembly In force Term ends Aug 9, 2030 · High confidence	In force	Term ends Aug 9, 2030	High confidence
US 9,261,204	Method and Apparatus for Controlling Gas Flow via a Gas Shut-Off Valve Assembly In force Term ends Aug 9, 2030 · High confidence	In force	Term ends Aug 9, 2030	High confidence
US 8,625,722	GFSK Receiver Architecture and Methodology In force Term ends Aug 21, 2031 · High confidence	In force	Term ends Aug 21, 2031	High confidence
US 8,570,023	System and Method for Phase Load Discovery In force Term ends Dec 13, 2031 · High confidence	In force	Term ends Dec 13, 2031	High confidence
US 9,253,754	Multi-Band Channel Capacity for Meter Network In force Term ends Dec 21, 2031 · High confidence	In force	Term ends Dec 21, 2031	High confidence
US 9,176,192	Identifying the Operation of a Specified Type of Appliance In force Term ends Dec 23, 2031 · High confidence	In force	Term ends Dec 23, 2031	High confidence
US 8,701,703	Method and Apparatus for Controlling Gas Flow via a Gas Shut-Off Valve Assembly In force Term ends Mar 8, 2032 · High confidence	In force	Term ends Mar 8, 2032	High confidence
US 8,860,561	Method and Apparatus for Distributed Lighting Control In force Term ends Oct 18, 2032 · High confidence	In force	Term ends Oct 18, 2032	High confidence

10 of 32 patents shown.

Pro members see all 32.

Pro members: see all 32 patents

Also on record, not counted in the 32: 18 patents in force now held by others · 5 patents ended · 6 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.

Fee due within 90 days marks a patent with a maintenance fee due within 90 days of the date this page was computed and not yet recorded paid, so it can end earlier than the bar shows. A fee left unpaid ends the patent at the close of the six month grace period that follows its due date, not on the due date itself. It is not a prediction that the fee will be missed.

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

Sensus USA Inc.