Applied Physics Technologies, Inc.

8 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

Feb 2031

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 Jul 19, 2027
The maintenance fee for Thermal-field type electron source composed of transition metal carbide material with artificial facet (US 9,240,301) comes due Jul 19, 2027. Unpaid by Jan 19, 2028, it lapses early.
1 fee due Oct 2, 2027
The maintenance fee for Monolithic heater for thermionic electron cathode (US 11,948,769) comes due Oct 2, 2027. Unpaid by Apr 3, 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.

Showing 1 to 8 of 8

Patent	Title	Status	Expires	Confidence
US 8,987,982	Method of producing rapid heating of a cathode installed in a thermionic emission assembly In force Term ends Feb 25, 2031 · From the USPTO record	In force	Term ends Feb 25, 2031	From the USPTO record
US 8,581,481	Pre-aligned thermionic emission assembly In force Term ends Aug 4, 2031 · From the USPTO record	In force	Term ends Aug 4, 2031	From the USPTO record
US 9,490,098	Thermal-field type electron source composed of transition metal carbide material In force Ends no later than Mar 27, 2033 · From the USPTO record	In force	Ends no later than Mar 27, 2033	From the USPTO record
US 9,240,301	Thermal-field type electron source composed of transition metal carbide material with artificial facet In force Term ends Mar 29, 2033 · From the USPTO record	In force	Term ends Mar 29, 2033	From the USPTO record
US 10,192,708	Electron emitter source In force Term ends Dec 29, 2036 · From the USPTO record	In force	Term ends Dec 29, 2036	From the USPTO record
US 10,083,812	Thermionic-enhanced field emission electron source composed of transition metal carbide material with sharp emitter end-form In force Term ends Jan 10, 2037 · From the USPTO record	In force	Term ends Jan 10, 2037	From the USPTO record
US 11,948,769	Monolithic heater for thermionic electron cathode In force Term ends Jan 12, 2043 · From the USPTO record	In force	Term ends Jan 12, 2043	From the USPTO record
US 12,237,138	Monolithic heater for thermionic electron cathode In force Term ends Jan 12, 2043 · From the USPTO record	In force	Term ends Jan 12, 2043	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

Every application published under this name has become a patent.