The Patent Finder

Exergyn Ltd.

68 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.
7
Ending by 2030
Oct 2027
Next term end

When these terms end

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.
  • 2 fees due Dec 16 to 27, 2026 · next Dec 16
  • 1 fee due Jan 9, 2027
    The maintenance fee for Touch controller for a downhole tool (US 10,344,569) comes due Jan 9, 2027. Unpaid by Jul 9, 2027, it lapses early.
  • 3 fees due Apr 1 to 10, 2027 · next Apr 1
  • 2 fees due May 21 to 24, 2027 · next May 21
  • 1 fee due Jun 26, 2027
    The maintenance fee for Gas separated cycling of SMA/NTE bundles in a fluid environment for power production cycle or heat pump cycles (US 11,852,125) comes due Jun 26, 2027. Unpaid by Dec 27, 2027, it lapses early.
  • 3 fees due Aug 16 to 20, 2027 · next Aug 16
  • 1 fee due Oct 12, 2027
    The maintenance fee for Graphene polymer composite material (US 9,309,382) comes due Oct 12, 2027. Unpaid by Apr 12, 2028, it lapses early.
  • 1 fee due Nov 5, 2027
    The maintenance fee for Seawater electrolyte electrochemical cell (US 10,644,328) comes due Nov 5, 2027. Unpaid by May 5, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

  • 2 of the patents on this record were granted since Aug 16, 2026
  • 2 terms have 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.
PatentTitleStatus Expires Confidence
US 8,691,433Battery
In force
 · From the USPTO record
In forceFrom the USPTO record
US 7,795,319Tire recycling method generating carbonous residue
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,888,869Systems, Methods and Apparatuses for Magnetic Processing of Solar Modules
In force
 · Medium confidence
In forceMedium confidence
US 7,880,435Multi-Battery Charger with Individual Battery Bypass Control
In force
 · High confidence
In forceHigh confidence
US 7,830,120Low Side N-Channel Fet Protection Circuit
In force
 · High confidence
In forceHigh confidence
US 7,830,125Anti-Swell Protection Circuit for Battery Cells
In force
 · High confidence
In forceHigh confidence
US 8,912,429Interconnect Assembly
In force
 · High confidence
In forceHigh confidence
US 8,833,005Base Sheet Integrated Photovoltaic Roofing Assemblies
In force
 · High confidence
In forceHigh confidence
US 9,397,326Battery
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,887,453Supporting Structures for Building Integrable Photovoltaic Modules
In force
 · High confidence
In forceHigh confidence
10 of 68 patents shown.
Pro members see all 68.
Pro members: see all 68 patents
Also on record, not counted in the 68: 1 patent in force now held by others · 71 lapsed for an unpaid fee · 51 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.

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 abandoned · 73 no status recorded

List them

The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited