Grtgaz

13 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 2027

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 8, 2027
The maintenance fee for Mobile backfeeding installation (US 11,719,389) comes due Feb 8, 2027. Unpaid by Aug 9, 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.

Patent	Title	Status	Expires	Confidence
US 7,527,240	Flow Control Device, with Assisted Anchoring, Insertable into a Pipeline In force Term ends Mar 1, 2027 · High confidence	In force	Term ends Mar 1, 2027	High confidence
US 7,561,928	Method for the automatic optimization of a natural gas transport network In force Term ends Jan 28, 2028 · From the USPTO record	In force	Term ends Jan 28, 2028	From the USPTO record
US 8,049,146	Device and method for welding two polymer parts via fusion In force Term ends Jul 30, 2028 · From the USPTO record	In force	Term ends Jul 30, 2028	From the USPTO record
US 8,316,871	Device and process for perforating a duct fitted with a connector seat In force Term ends Oct 2, 2028 · From the USPTO record	In force	Term ends Oct 2, 2028	From the USPTO record
US 8,235,066	Automatically Tripped Compact Safety Device for Controlling the Flow of a Fluid In force Term ends May 22, 2029 · High confidence	In force	Term ends May 22, 2029	High confidence
US 8,028,573	Tool set for the insertion of a flow monitoring device in a fluid piping, and implementation method therefore In force (reinstated) Term ends Apr 6, 2030 · From the USPTO record	In force (reinstated)	Term ends Apr 6, 2030	From the USPTO record
US 8,272,112	Tool set for the introduction in a sheath of a flow-monitoring device for a fluid piping, and an implementation method therefore In force Term ends Jul 27, 2031 · From the USPTO record	In force	Term ends Jul 27, 2031	From the USPTO record
US 8,804,458	Non destructive testing device and method for detecting possible anomalies of a wall thickness In force Term ends Mar 3, 2033 · From the USPTO record	In force	Term ends Mar 3, 2033	From the USPTO record
US 11,396,981	Scalable backfeeding installation and method In force Term ends Jun 17, 2039 · From the USPTO record	In force	Term ends Jun 17, 2039	From the USPTO record
US 11,719,389	Mobile backfeeding installation In force Term ends Jul 15, 2040 · From the USPTO record	In force	Term ends Jul 15, 2040	From the USPTO record

10 of 13 patents shown.

Pro members see all 13.

Pro members: see all 13 patents

Also on record, not counted in the 13: 1 lapsed for an unpaid fee · 3 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.

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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.

3 pending · 3 abandoned · 3 no status recorded

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