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SM Tech Co., Ltd.

6 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
Oct 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 12, 2027
    The maintenance fee for Water hammer prevention system using operation state analysis algorithm (US 10,648,605) comes due Nov 12, 2027. Unpaid by May 12, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

  • 1 of the patents on this record was granted 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.

Showing 1 to 6 of 6

PatentTitleStatus Expires Confidence
US 9,353,899Water hammer recognizing and energy saving water hammer prevention system and method for controlling the same
In force
 · From the USPTO record
In forceFrom the USPTO record
US 10,648,605Water hammer prevention system using operation state analysis algorithm
In force
 · From the USPTO record
In forceFrom the USPTO record
US 12,181,776Rail Assembly Applied to Optical Actuator, Manufacturing Method Thereof and Insert Rail Structure Applied to Optical Actuator
In force
 · High confidence
In forceHigh confidence
US 12,242,170Frame assembly for optical actuator with rail shafts and manufacturing method thereof
In force
 · From the USPTO record
In forceFrom the USPTO record
US 12,328,043Motor frame applied to optical instrument actuator
In force
 · From the USPTO record
In forceFrom the USPTO record
US 12,724,226Frame Module of Optical Actuator Driven by Shaft Sliding Method
In force
 · High confidence
In forceHigh confidence
Also on record, not counted in the 6: 1 lapsed for an unpaid fee · 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.

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