The Patent Finder

Hadal, Inc.

28 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
Jan 2033
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.
  • 1 fee due Nov 19, 2026
    The maintenance fee for Systems and methods for seismic survey (US 9,036,452) comes due Nov 19, 2026. Unpaid by May 19, 2027, it lapses early.
  • 1 fee due Dec 27, 2026
    The maintenance fee for Incremental deployment of a buoy or buoy network (US 11,685,479) comes due Dec 27, 2026. Unpaid by Jun 28, 2027, it lapses early.
  • 2 fees due Feb 11, 2027
  • 1 fee due Apr 8, 2027
    The maintenance fee for Systems and methods for bi-static or multi-static holographic navigation (US 10,436,886) comes due Apr 8, 2027. Unpaid by Oct 8, 2027, it lapses early.
  • 1 fee due May 10, 2027
    The maintenance fee for Systems and methods for a robust underwater vehicle (US 9,180,940) comes due May 10, 2027. Unpaid by Nov 10, 2027, it lapses early.
  • 2 fees due Oct 14 to 26, 2027 · next Oct 14

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.
PatentTitleStatus Expires Confidence
US 10,110,323Systems and methods for transmitting data from an underwater station
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,879,357Systems and methods for high coverage rate synthetic aperture sonar
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,867,311Systems and methods for low grating sidelobe synthetic aperture sonar
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,873,337Systems and methods for overpinging synthetic aperture sonar transmitters
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,103,937Systems and methods for holographic navigation
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,103,938Systems and methods for holographic simultaneous localization and mapping
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,036,452Systems and methods for seismic survey
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,180,940Systems and methods for a robust underwater vehicle
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,321,510Systems and methods for deploying autonomous underwater vehicles from a ship
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,399,503Systems and methods for navigating autonomous underwater vehicles
In force
 · From the USPTO record
In forceFrom the USPTO record
10 of 28 patents shown.
Pro members see all 28.
Pro members: see all 28 patents
Also on record, not counted in the 28: 2 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.

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.

1 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