Apn Inc.

11 patents currently held · Updated Nov 14, 2026

1 more in force is now held by another company

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

Ending by 2030

Oct 2029

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 1, 2027
The maintenance fee for Valve With a Load Varying Mechanism, and Method of Operating the Same (US 10,428,960) comes due Apr 1, 2027. Unpaid by Oct 1, 2027, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

1 term has ended since Aug 16, 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 7,931,043	Diaphragm-Sealed Valve with Process Purging Groove In force Term ends Oct 6, 2029 · High confidence	In force	Term ends Oct 6, 2029	High confidence
US 8,469,057	Diaphragm-Sealed Valve Having a Locking Mechanism In force Term ends Jul 24, 2030 · High confidence	In force	Term ends Jul 24, 2030	High confidence
US 8,851,452	Self-Aligned Plunger for Chromatographic Valve In force Term ends Aug 3, 2030 · High confidence	In force	Term ends Aug 3, 2030	High confidence
US 8,104,506	Diaphragm-Sealed Valve Having Intermediate Communication Ports In force Term ends Nov 30, 2030 · High confidence	In force	Term ends Nov 30, 2030	High confidence
US 8,794,594	Temperature Compensated Valve for Gas Chromatography In force Term ends Dec 31, 2030 · High confidence	In force	Term ends Dec 31, 2030	High confidence
US 9,004,449	Conical Rotary Valve for Chromatographic Applications In force Term ends Sep 23, 2031 · High confidence	In force	Term ends Sep 23, 2031	High confidence
US D788,268	Rotary Valve In force Term ends May 30, 2032 · High confidence	In force	Term ends May 30, 2032	High confidence
US 9,377,444	Diaphragm-Sealed Valve with Improved Actuator Design In force Term ends Apr 13, 2033 · High confidence	In force	Term ends Apr 13, 2033	High confidence
US 10,428,960	Valve With a Load Varying Mechanism, and Method of Operating the Same In force Term ends Jul 31, 2033 · High confidence	In force	Term ends Jul 31, 2033	High confidence
US 9,435,440	Valve With a Loading Varying Mechanism, and Method of Operating the Same In force Term ends Aug 26, 2033 · High confidence	In force	Term ends Aug 26, 2033	High confidence

10 of 11 patents shown.

Pro members see all 11.

Pro members: see all 11 patents

Also on record, not counted in the 11: 1 patent in force now held by others · 2 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

Every application published under this name has become a patent.