The Patent Finder

Dosatron International

29 patents currently held · Updated Nov 15, 2026
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
9
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.
  • 1 fee due Aug 4, 2027
    The maintenance fee for Supervised proportional metering device and methods for monitoring a metering pump (US 10,551,227) comes due Aug 4, 2027. Unpaid by Feb 4, 2028, it lapses early.
  • 1 fee due Sep 24, 2027
    The maintenance fee for Metering mechanism for a pump, methods for locking and unlocking such a mechanism (US 10,598,164) comes due Sep 24, 2027. Unpaid by Mar 24, 2028, it lapses early.
  • 1 fee due Oct 5, 2027
    The maintenance fee for Proportional dosimeter for metering an auxiliary liquid into a main liquid (US 9,303,634) comes due Oct 5, 2027. Unpaid by Apr 5, 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 17, 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 D691,178Part of a metering pump
In force
 · From the USPTO record
In forceFrom the USPTO record
US D691,179Metering pump
In force
 · From the USPTO record
In forceFrom the USPTO record
US 7,975,597Hydraulic machine, in particular hydraulic motor, with a reciprocating movement
In force
 · From the USPTO record
In forceFrom the USPTO record
US D725,679Metering pump
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,136,441Hydraulic machine, in particular hydraulic motor, with a reciprocating movement, and differential piston for such a machine
In force
 · From the USPTO record
In forceFrom the USPTO record
US D729,848Metering pump
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,132,497Hydraulic machine, in particular hydraulic motor, and metering device comprising such a motor
In force
 · From the USPTO record
In forceFrom the USPTO record
US D737,167Metering pump
In force
 · From the USPTO record
In forceFrom the USPTO record
US D737,168Housing for a metering pump
In force
 · From the USPTO record
In forceFrom the USPTO record
US D769,943Metering pump
In force
 · From the USPTO record
In forceFrom the USPTO record
10 of 29 patents shown.
Pro members see all 29.
Pro members: see all 29 patents
Also on record, not counted in the 29: 2 lapsed for an unpaid fee · 3 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 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited