Tri-State Environmental, LLC

20 patents currently held · Updated Nov 15, 2026

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

Recorded under 2 name spellings.

Ending by 2030

Oct 2035

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 Apr 8, 2027
The maintenance fee for Method and apparatus for cleaning a blowout preventer stack apparatus (US 10,435,990) comes due Apr 8, 2027. Unpaid by Oct 8, 2027, it lapses early.
2 fees due May 21 to 26, 2027 · next May 21
1 fee due Aug 18, 2027
The maintenance fee for Method and apparatus for cleaning an oil and gas well riser assembly with multiple tools simultaneously (US 10,562,080) comes due Aug 18, 2027. Unpaid by Feb 18, 2028, it lapses early.
1 fee due Sep 24, 2027
The maintenance fee for Method and Apparatus, Including Hose Reel, for Cleaning an Oil and Gas Well Riser Assembly with Multiple Tools Simultaneously (US 10,596,605) comes due Sep 24, 2027. Unpaid by Mar 24, 2028, it lapses early.
1 fee due Nov 7, 2027
The maintenance fee for Method and Apparatus for Cleaning and Inspecting Oil Well Drilling Mud Flow Lines (US 11,975,368) comes due Nov 7, 2027. Unpaid by May 8, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

1 of the patents on this record was granted since Aug 17, 2026

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 11,135,628	Method and apparatus for cleaning an oil and gas well riser assembly with multiple tools simultaneously In force Term ends Oct 26, 2035 · From the USPTO record	In force	Term ends Oct 26, 2035	From the USPTO record
US 10,562,080	Method and apparatus for cleaning an oil and gas well riser assembly with multiple tools simultaneously In force Term ends Dec 7, 2035 · From the USPTO record	In force	Term ends Dec 7, 2035	From the USPTO record
US 9,844,803	Method and apparatus for cleaning an oil and gas well riser assembly with multiple tools simultaneously In force Term ends Jan 1, 2036 · From the USPTO record	In force	Term ends Jan 1, 2036	From the USPTO record
US 10,486,205	Method and apparatus for cleaning an oil and gas well riser assembly with multiple tools simultaneously In force Term ends May 23, 2036 · From the USPTO record	In force	Term ends May 23, 2036	From the USPTO record
US 11,549,339	Method and Apparatus for Cleaning and Inspecting Oil Well Drilling Mud Flow Lines In force Term ends May 23, 2036 · High confidence	In force	Term ends May 23, 2036	High confidence
US 11,975,368	Method and Apparatus for Cleaning and Inspecting Oil Well Drilling Mud Flow Lines In force Term ends May 23, 2036 · Medium confidence	In force	Term ends May 23, 2036	Medium confidence
US 12,715,025	Method and Apparatus for Cleaning and Inspecting Oil Well Drilling Mud Flow Lines In force Term ends May 23, 2036 · High confidence	In force	Term ends May 23, 2036	High confidence
US 11,167,328	Method and apparatus for cleaning an oil and gas well riser assembly with multiple tools simultaneously In force Term ends Aug 12, 2036 · From the USPTO record	In force	Term ends Aug 12, 2036	From the USPTO record
US 10,195,650	Method and apparatus for cleaning an oil and gas well riser assembly with multiple tools simultaneously In force Term ends Aug 29, 2036 · From the USPTO record	In force	Term ends Aug 29, 2036	From the USPTO record
US 10,174,564	Method and apparatus for cleaning an oil and gas well riser assembly with multiple tools simultaneously In force Term ends Oct 2, 2036 · From the USPTO record	In force	Term ends Oct 2, 2036	From the USPTO record

10 of 20 patents shown.

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Also on record, not counted in the 20: 1 past the fee grace period. 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.