Convion Oy

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 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 Jun 17, 2027
The maintenance fee for Recirculation arrangement and method for a high temperature cell system (US 10,511,035) comes due Jun 17, 2027. Unpaid by Dec 17, 2027, 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 8,580,443	Method and arrangement for controlling anode recirculation for fuel cells using a steam jet ejector In force Term ends Sep 14, 2030 · From the USPTO record	In force	Term ends Sep 14, 2030	From the USPTO record
US 8,624,611	Arrangement and method for monitoring galvanic isolation of fuel cell device In force Term ends Dec 12, 2030 · From the USPTO record	In force	Term ends Dec 12, 2030	From the USPTO record
US 8,507,144	Method and arrangement for controlling fuel feed in the fuel cell system In force Term ends Mar 8, 2031 · From the USPTO record	In force	Term ends Mar 8, 2031	From the USPTO record
US 9,478,814	Method and arrangement to control operating conditions in fuel cell device In force Term ends Jul 6, 2031 · From the USPTO record	In force	Term ends Jul 6, 2031	From the USPTO record
US 8,890,365	Fuel cell device and method for feeding electrical current to electrical network In force Term ends Sep 29, 2031 · From the USPTO record	In force	Term ends Sep 29, 2031	From the USPTO record
US 9,005,832	Method and Arrangement for Improved Operability of a High Temperature Fuel Cell System In force Term ends Jan 31, 2032 · High confidence	In force	Term ends Jan 31, 2032	High confidence
US 9,005,831	Offset Control Arrangement and Method for Controlling Voltage Values in a Fuel Cell System In force Term ends Apr 20, 2032 · High confidence	In force	Term ends Apr 20, 2032	High confidence
US 9,455,466	Method and arrangement for improved controllability of fuel cell stacks In force Term ends Aug 3, 2032 · From the USPTO record	In force	Term ends Aug 3, 2032	From the USPTO record
US 9,496,567	Method and arrangement for utilizing recirculation for high temperature fuel cell system In force Term ends Feb 5, 2033 · From the USPTO record	In force	Term ends Feb 5, 2033	From the USPTO record
US 10,511,035	Recirculation arrangement and method for a high temperature cell system In force Term ends Sep 23, 2033 · From the USPTO record	In force	Term ends Sep 23, 2033	From the USPTO record

10 of 12 patents shown.

Pro members see all 12.

Pro members: see all 12 patents

Also on record, not counted in the 12: 4 lapsed for an unpaid fee. 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

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.

2 pending · 4 no status recorded

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