CT Energy Ltd.

8 patents currently held · Updated Nov 15, 2026

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

Ending by 2030

Jul 2030

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 15, 2027
The maintenance fee for Fuel heating apparatus and methods (US 11,725,613) comes due Feb 15, 2027. Unpaid by Aug 16, 2027, it lapses early.
1 fee due Jun 29, 2027
The maintenance fee for Vibrating downhole tool (US 9,222,312) comes due Jun 29, 2027. Unpaid by Dec 29, 2027, it lapses early.
2 fees due Nov 12 to 14, 2027 · next Nov 12

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.

Showing 1 to 8 of 8

Patent	Title	Status	Expires	Confidence
US 8,162,078	Vibrating downhole tool In force Term ends Jul 17, 2030 · From the USPTO record	In force	Term ends Jul 17, 2030	From the USPTO record
US 9,222,312	Vibrating downhole tool In force Term ends May 12, 2031 · From the USPTO record	In force	Term ends May 12, 2031	From the USPTO record
US 10,233,874	Fuel heating apparatus and methods In force Term ends Mar 1, 2037 · From the USPTO record	In force	Term ends Mar 1, 2037	From the USPTO record
US 11,725,613	Fuel heating apparatus and methods In force Term ends Mar 1, 2037 · From the USPTO record	In force	Term ends Mar 1, 2037	From the USPTO record
US 12,044,195	Fuel heating apparatus and methods In force Term ends Mar 1, 2037 · From the USPTO record	In force	Term ends Mar 1, 2037	From the USPTO record
US 10,648,237	Torque generator In force Term ends Jun 9, 2038 · From the USPTO record	In force	Term ends Jun 9, 2038	From the USPTO record
US 12,188,321	Modified torque generator and methods of use In force Term ends Jul 31, 2040 · From the USPTO record	In force	Term ends Jul 31, 2040	From the USPTO record
US 11,982,147	Modified torque generator and methods of use In force Term ends Mar 26, 2041 · From the USPTO record	In force	Term ends Mar 26, 2041	From the USPTO record

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.

1 no status recorded

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