The Patent Finder

QualiTau, Inc.

14 patents currently held · Updated Nov 14, 2026
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.

Recorded under 2 name spellings.

7
Ending by 2030
Apr 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 May 24, 2027
    The maintenance fee for Wafer temperature measurement tool (US 9,196,516) comes due May 24, 2027. Unpaid by Nov 24, 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.
PatentTitleStatus Expires Confidence
US 7,576,550Automatic multiplexing system for automated wafer testing
In force
 · From the USPTO record
In forceFrom the USPTO record
US 7,602,201High temperature ceramic socket configured to test packaged semiconductor devices
In force
 · From the USPTO record
In forceFrom the USPTO record
US 7,429,856Voltage source measurement unit with minimized common mode errors
In force
 · From the USPTO record
In forceFrom the USPTO record
US 7,602,205Electromigration tester for high capacity and high current
In force
 · From the USPTO record
In forceFrom the USPTO record
US 7,598,760High temperature ceramic die package and DUT board socket
In force
 · From the USPTO record
In forceFrom the USPTO record
US 7,888,951Integrated unit for electrical/reliability testing with improved thermal control
In force
 · From the USPTO record
In forceFrom the USPTO record
US 7,812,589Modified current source (MCS) with seamless range switching
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,196,516Wafer temperature measurement tool
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,772,351Pulsed current source with internal impedance matching
In force
 · From the USPTO record
In forceFrom the USPTO record
US 12,135,335Semi-Automatic Prober
In force
 · Medium confidence
In forceMedium confidence
10 of 14 patents shown.
Pro members see all 14.
Pro members: see all 14 patents
Also on record, not counted in the 14: 1 lapsed for an unpaid fee · 16 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 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