Eight patents currently held, every record listed here

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

The next term ends in Jul 2035. from the record

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

Jul 2035

Next term end

Patent families

When these terms end

Each bar runs from grant to computed term end. 2017 to 2043.

US 9,644,779 Gate Valves for Installation in Pressurized Pipes Jul 3, 2035

US 9,829,141 Linestops, Nozzles and Completion Plugs for Installation in Pressurized Pipes Dec 10, 2035

US 10,473,560 Pipe Core Sampling and Tapping Apparatus Mar 20, 2038

US 10,619,747 Expanding Gate Valve Assembly with Pressure Equalization System Apr 27, 2038

US 10,718,458 Automated Pressure Equalization Above and Below Completion Plug of Gate Valve Cartridge or a Completion Plug of a Line Stop Fitting May 25, 2038

US 11,248,992 Systems And Methods For Accessing And Monitoring A Fluid Within A Pressurized Pipe Dec 14, 2039

US 11,530,761 Systems and Methods for Protecting a Tether Line Disposed in a Pressurized Pipe Sep 9, 2041

US 12,578,050 Insertion Valves and Methods of Installing Insertion Valves in Pressurized Pipes Dec 21, 2043

202220272032203720422043

2 pending applications: term is not computable until grant.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 patents

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

Notable

Pipe Core Sampling and Tapping Apparatus US 10,473,560

Granted 2019. Computed term ends 2038.

Ends Mar 2038 · High confidence Also notable

Systems And Methods For Accessing And Monitoring A Fluid Within A Pressurized Pipe US 11,248,992

The newest of the three, granted 2022. It anchors the portfolio to 2039, later than anything else here.

Ends Dec 2039 · High confidence Also notable

Gate Valves for Installation in Pressurized Pipes US 9,644,779

Granted 2017 and renewed at every maintenance window due so far. Protection runs to 2035.

Ends Jul 2035 · 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 May 12, 2027
The maintenance fee for Pipe Core Sampling and Tapping Apparatus (US 10,473,560) comes due May 12, 2027. Unpaid by Nov 12, 2027, it lapses early.
1 fee due Oct 14, 2027
The maintenance fee for Expanding Gate Valve Assembly with Pressure Equalization System (US 10,619,747) comes due Oct 14, 2027. Unpaid by Apr 14, 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 2 largest of its 8 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Insertion Valves and Methods of Installing Insertion Valves in Pressurized Pipes	1 in force	to Dec 2043
Systems and Methods for Protecting a Tether Line Disposed in a Pressurized Pipe	1 in force	to Sep 2041

Patents held now

Soonest term end first.

Showing 1 to 8 of 8

Patent	Title	Status	Expires	Confidence
US 9,644,779	Gate Valves for Installation in Pressurized Pipes In force Term ends Jul 3, 2035 · High confidence	In force	Term ends Jul 3, 2035	High confidence
US 9,829,141	Linestops, Nozzles and Completion Plugs for Installation in Pressurized Pipes In force Term ends Dec 10, 2035 · High confidence	In force	Term ends Dec 10, 2035	High confidence
US 10,473,560	Pipe Core Sampling and Tapping Apparatus In force Term ends Mar 20, 2038 · High confidence	In force	Term ends Mar 20, 2038	High confidence
US 10,619,747	Expanding Gate Valve Assembly with Pressure Equalization System In force Term ends Apr 27, 2038 · High confidence	In force	Term ends Apr 27, 2038	High confidence
US 10,718,458	Automated Pressure Equalization Above and Below Completion Plug of Gate Valve Cartridge or a Completion Plug of a Line Stop Fitting In force Term ends May 25, 2038 · High confidence	In force	Term ends May 25, 2038	High confidence
US 11,248,992	Systems And Methods For Accessing And Monitoring A Fluid Within A Pressurized Pipe In force Term ends Dec 14, 2039 · High confidence	In force	Term ends Dec 14, 2039	High confidence
US 11,530,761	Systems and Methods for Protecting a Tether Line Disposed in a Pressurized Pipe In force Term ends Sep 9, 2041 · High confidence	In force	Term ends Sep 9, 2041	High confidence
US 12,578,050	Insertion Valves and Methods of Installing Insertion Valves in Pressurized Pipes In force Term ends Dec 21, 2043 · High confidence	In force	Term ends Dec 21, 2043	High confidence

Also on record, not counted in the 8: 1 patent ended · 2 applications pending · 3 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.

Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.

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