The Patent Finder

Mechanical Dynamics & Analysis LLC

17 patents currently held · Updated Nov 14, 2026
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
3
Ending by 2030
Nov 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 Dec 2, 2026
    The maintenance fee for Impingement Cooling Device (US 9,046,269) comes due Dec 2, 2026. Unpaid by Jun 2, 2027, it lapses early.
  • 1 fee due Jan 9, 2027
    The maintenance fee for Spall Break for Turbine Component Coatings (US 10,344,605) comes due Jan 9, 2027. Unpaid by Jul 9, 2027, it lapses early.
  • 1 fee due Jun 12, 2027
    The maintenance fee for Turbine Blade Tip Cooling Hole Supply Plenum (US 11,840,940) comes due Jun 12, 2027. Unpaid by Dec 13, 2027, it lapses early.
  • 1 fee due Sep 30, 2027
    The maintenance fee for Bypass valve assembly for turbine generators (US 10,605,110) comes due Sep 30, 2027. Unpaid by Mar 31, 2028, 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 8,307,656Gas Turbine Engine Systems Involving Cooling of Combustion Section Liners
In force
 · High confidence
In forceHigh confidence
US 8,051,662Transition Duct Assemblies and Gas Turbine Engine Systems Involving Such Assemblies
In force
 · High confidence
In forceHigh confidence
US 8,051,663Gas Turbine Engine Systems Involving Cooling of Combustion Section Liners
In force
 · High confidence
In forceHigh confidence
US 8,572,979Gas Turbine Combustor Liner Cap Assembly
In force
 · High confidence
In forceHigh confidence
US D823,992Poppet valve
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,046,269Impingement Cooling Device
In force
 · High confidence
In forceHigh confidence
US 10,875,131Repair or remanufacture of blade platform for a gas turbine engine
In force
 · From the USPTO record
In forceFrom the USPTO record
US 10,605,110Bypass valve assembly for turbine generators
In force
 · From the USPTO record
In forceFrom the USPTO record
US 10,069,367Modified attachment system for springs in a generator rotor
In force
 · From the USPTO record
In forceFrom the USPTO record
US 11,492,921Bypass valve assembly for turbine generators
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: 7 lapsed for an unpaid fee · 7 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.

3 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