The Patent Finder

Kadant Inc.

17 patents currently held · Updated Nov 14, 2026
1 more in force is now held by another company
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
6
Ending by 2030
Feb 2029
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 Jun 5, 2027
    The maintenance fee for Systems and methods for providing doctor blade holders with vibration mitigation (US 11,834,790) comes due Jun 5, 2027. Unpaid by Dec 6, 2027, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

  • 1 term has ended 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.
PatentTitleStatus Expires Confidence
US 7,867,364Doctor Blade Holder Permitting Efficient Assembly of Doctor Assemblies and Replacement of Doctor Blades
In force
 · High confidence
In forceHigh confidence
US 8,826,560Support apparatus for supporting a syphon
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,337,666Systems and methods for providing improved dewatering performance in a papermaking machine
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,435,385Systems and methods for cleaning and conditioning a moving surface using cleaning apparatus with plate elements for mounting to doctor blade holders
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,293,074Systems and methods for cleaning and conditioning a moving surface using cleaning apparatus with plate elements for mounting to doctor blade holders
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,082,680Shoe device secured to a syphon for removing condensate
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,321,992Integrated doctor blade holders
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,898,851Doctor blade holder
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,551,109Doctor blade including combination carbon/glass yarns
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,506,192Systems and methods for doctor blade load and vibration measurement as well as blade vibration mitigation
In force
 · From the USPTO record
In forceFrom the USPTO record
10 of 17 patents shown.
Pro members see all 17.
Pro members: see all 17 patents
Also on record, not counted in the 17: 1 patent in force now held by others · 9 lapsed for an unpaid fee · 11 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.

5 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