The Patent Finder

Siontech Co., Ltd.

5 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
Jun 2032
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 Apr 17, 2027
    The maintenance fee for Deionization electrode, apparatus and method for deionization electrode, electrode module and deionization module (US 11,787,711) comes due Apr 17, 2027. Unpaid by Oct 18, 2027, it lapses early.
  • 1 fee due May 21, 2027
    The maintenance fee for Energy-saving ion adsorption/desorption water purification apparatus and energy-saving water purification method (US 11,820,680) comes due May 21, 2027. Unpaid by Nov 22, 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.

Showing 1 to 5 of 5

PatentTitleStatus Expires Confidence
US 9,856,156Apparatus for preparing electrolyzed sterilizing water, and system and method for preparing electrolyzed sterilizing water, containing same
In force
 · From the USPTO record
In forceFrom the USPTO record
US 11,820,680Energy-saving ion adsorption/desorption water purification apparatus and energy-saving water purification method
In force
 · From the USPTO record
In forceFrom the USPTO record
US 12,065,365Filter Case, and Water Purifier and Water Softener Using Filter Case
In force
 · High confidence
In forceHigh confidence
US 11,787,711Deionization electrode, apparatus and method for deionization electrode, electrode module and deionization module
In force
 · From the USPTO record
In forceFrom the USPTO record
US 12,570,551An Apparatus for Manufacturing a Composite Deionization Electrode
In force
 · High confidence
In forceHigh confidence
Also on record, not counted in the 5: 1 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 · 3 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