Daniel Opco, LLC

12 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

Sep 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 Dec 11, 2026
The maintenance fee for Double Block and Bleed System for an Orifice Fitting (US 10,317,003) comes due Dec 11, 2026. Unpaid by Jun 11, 2027, it lapses early.
1 fee due Jul 28, 2027
The maintenance fee for Flowmeter and Orifice Plate Carrier Assembly Therefor (US 10,545,040) comes due Jul 28, 2027. Unpaid by Jan 28, 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 7,461,563	Bi-Directional Orifice Plate Assembly In force Term ends Sep 7, 2027 · High confidence	In force	Term ends Sep 7, 2027	High confidence
US 7,870,873	Dual Chamber Orifice Fitting Isolation Valve In force Term ends Oct 20, 2029 · High confidence	In force	Term ends Oct 20, 2029	High confidence
US 8,161,825	Orifice Fitting with a Drainage System In force Term ends Dec 8, 2030 · High confidence	In force	Term ends Dec 8, 2030	High confidence
US 8,127,792	Pressure Equalization System for a Bi-Directional Orifice Fitting In force Term ends Jan 4, 2031 · High confidence	In force	Term ends Jan 4, 2031	High confidence
US 8,215,340	Orifice Plate Carrier In force Term ends May 12, 2031 · High confidence	In force	Term ends May 12, 2031	High confidence
US 9,366,556	Method for Ultrasonic Metering Using an Orifice Meter Fitting In force Term ends Dec 9, 2032 · High confidence	In force	Term ends Dec 9, 2032	High confidence
US 8,960,017	System and Method for Ultrasonic Metering Using an Orifice Meter Fitting In force Term ends May 17, 2033 · High confidence	In force	Term ends May 17, 2033	High confidence
US 10,697,558	Flow Control System and Control Valve Having Closure Assistance In force Term ends Aug 4, 2034 · High confidence	In force	Term ends Aug 4, 2034	High confidence
US 9,851,018	Relief Valve with Position Indication In force Term ends Jan 28, 2035 · High confidence	In force	Term ends Jan 28, 2035	High confidence
US 9,933,289	Orifice Plate Assembly In force Term ends Aug 12, 2035 · High confidence	In force	Term ends Aug 12, 2035	High confidence

10 of 12 patents shown.

Pro members see all 12.

Pro members: see all 12 patents

Also on record, not counted in the 12: 3 lapsed for an unpaid fee · 5 ended at full term · 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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