Ahlstrom Performance Materials Oy

9 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

May 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 Apr 24, 2027
The maintenance fee for Compostable Lid Intended to Seal a Capsule and a Capsule Sealed by the Lid (US 11,794,985) comes due Apr 24, 2027. Unpaid by Oct 25, 2027, it lapses early.
1 fee due Jul 14, 2027
The maintenance fee for Fibre-Based Support Containing a Layer of a Functionalized Watersoluble Polymer, Method of Production and Use Thereof (US 10,533,286) comes due Jul 14, 2027. Unpaid by Jan 14, 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 9 of 9

Patent	Title	Status	Expires	Confidence
US 8,871,342	Cellulose Fibre-Based Support Containing a Modified Pva Layer-Method for Production and Use In force Term ends May 12, 2031 · High confidence	In force	Term ends May 12, 2031	High confidence
US 10,760,217	Fibre-Based Support Containing a Layer of a Functionalized Water-Soluble Polymer, Method of Production and Use Thereof In force Term ends Mar 4, 2032 · Medium confidence	In force	Term ends Mar 4, 2032	Medium confidence
US 9,803,321	Fibre-Based Support Containing a Layer of a Functionalized Watersoluble Polymer, Method of Production and Use Thereof In force Term ends Aug 14, 2032 · High confidence	In force	Term ends Aug 14, 2032	High confidence
US 10,533,286	Fibre-Based Support Containing a Layer of a Functionalized Watersoluble Polymer, Method of Production and Use Thereof In force Term ends Aug 14, 2032 · High confidence	In force	Term ends Aug 14, 2032	High confidence
US 9,587,355	Method of Manufacturing Glassine Paper In force Term ends Dec 12, 2033 · High confidence	In force	Term ends Dec 12, 2033	High confidence
US 11,993,449	Compostable Lid Intended to Seal a Capsule and a Capsule Sealed by the Lid In force Term ends Apr 28, 2037 · High confidence	In force	Term ends Apr 28, 2037	High confidence
US 11,794,985	Compostable Lid Intended to Seal a Capsule and a Capsule Sealed by the Lid In force Term ends Oct 26, 2037 · High confidence	In force	Term ends Oct 26, 2037	High confidence
US 12,344,459	Compostable Lid Comprising an Oxygen Barrier Layer for Sealing a Capsule and Capsule Sealed by the Lid In force Term ends Oct 26, 2037 · High confidence	In force	Term ends Oct 26, 2037	High confidence
US 12,162,659	Compostable Lid for Sealing a Capsule and a Capsule Sealed by the Lid In force Term ends Sep 13, 2040 · High confidence	In force	Term ends Sep 13, 2040	High confidence

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.

Export every term end as CSV · Pro