The Patent Finder

H2, Inc.

7 patents currently held · Updated Nov 14, 2026
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
0
Ending by 2030
Aug 2034
Next term end

When these terms end

Held patents by the year their term ends
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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 9, 2027
    The maintenance fee for Modular redox flow battery (US 11,870,120) comes due Jul 9, 2027. Unpaid by Jan 10, 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 7 of 7

PatentTitleStatus Expires Confidence
US 9,685,075Data communication systems and methods and devices for data communication between electronic device with serial data output and client device with audio port
In force
 · From the USPTO record
In forceFrom the USPTO record
US 11,038,180Unit cell for redox flow battery, for reducing pressure drop caused by electrolyte flow in stack
In force
 · From the USPTO record
In forceFrom the USPTO record
US 10,020,529Flow battery stack including capillary tube
In force
 · From the USPTO record
In forceFrom the USPTO record
US 10,741,851Bipolar plate-electrode assembly using thermoplastic resin and manufacturing method thereof
In force
 · From the USPTO record
In forceFrom the USPTO record
US 11,870,120Modular redox flow battery
In force
 · From the USPTO record
In forceFrom the USPTO record
US D1,132,408Firearm Sight Base Mount
In force
 · High confidence
In forceHigh confidence
US 12,609,339High Voltage-Type Redox Flow Battery Comprising Soc Balancing Device
In force
 · High confidence
In forceHigh 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.

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.

4 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