The Patent Finder

NPK Access Solutions LLC

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

Previously recorded as Newpark Mats & Integrated Services LLC (to 2025)

1
Ending by 2030
Dec 2030
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 26, 2026
    The maintenance fee for Liquid containment system for use with load-supporting surfaces (US 9,039,325) comes due Nov 26, 2026. Unpaid by May 26, 2027, it lapses early.
  • 1 fee due Dec 30, 2026
    The maintenance fee for Apparatus and methods for connecting mats (US 9,068,584) comes due Dec 30, 2026. Unpaid by Jun 30, 2027, it lapses early.
  • 2 fees due Jan 2 to 16, 2027 · next Jan 2
  • 1 fee due Feb 1, 2027
    The maintenance fee for Multilayered Mat (US 11,712,869) comes due Feb 1, 2027. Unpaid by Aug 2, 2027, it lapses early.
  • 1 fee due Mar 15, 2027
    The maintenance fee for Crane-mounted grab head (US 9,132,996) comes due Mar 15, 2027. Unpaid by Sep 15, 2027, it lapses early.
  • 2 fees due Jun 15 to 24, 2027 · next Jun 15
  • 1 fee due Aug 27, 2027
    The maintenance fee for Mats and connector systems thereof (US 11,913,179) comes due Aug 27, 2027. Unpaid by Feb 28, 2028, it lapses early.
  • 1 fee due Sep 29, 2027
    The maintenance fee for Methods of moving at least one mat with a crane-mounted grab head (US 9,297,124) comes due Sep 29, 2027. Unpaid by Mar 29, 2028, it lapses early.
  • 2 fees due Nov 5 to 10, 2027 · next Nov 5

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 8,388,291Mat lock pin
In force
 · From the USPTO record
In forceFrom the USPTO record
US D790,731Beveled berm
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,039,325Liquid containment system for use with load-supporting surfaces
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,745,124Liquid containment system
In force
 · From the USPTO record
In forceFrom the USPTO record
US 10,124,956Liquid containment system that accommodates vehicle ingress and egress
In force
 · From the USPTO record
In forceFrom the USPTO record
US 10,513,389Methods of preventing liquids from leaking off of a support surface
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,499,946Method of sealing between adjacent components of a load-supporting surface with at least one closed-cell compressible rubber seal
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,212,746Apparatus and methods for sealing between adjacent components of a load-supporting surface
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,068,584Apparatus and methods for connecting mats
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,132,996Crane-mounted grab head
In force
 · From the USPTO record
In forceFrom the USPTO record
10 of 40 patents shown.
Pro members see all 40.
Pro members: see all 40 patents
Also on record, not counted in the 40: 3 lapsed for an unpaid fee · 2 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.
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